Blitz I find really difficult. You just have no time to think. Lose most of my games on time. I am trying to get to 1000 games then I can stop playing Blitz
How hard it is to reach 1400+ blitz

It is difficult to describe because everyone learns at different paces and also because you never really know what a certain rating takes until you reached it yourself.
Similar to what @KingKev52 is getting at, the key is in taking steps. 1400+ blitz can be a "longer-term" goal, but first you can try reaching 900+ blitz for the "shorter-term" and then 1000 blitz then 1100, 1200, 1300 and finally 1400+. Naturally, 100 point intervals are just the example, but the point here is that you will reach ratings like 1400+ chess.com blitz by incrementally learning more and more and improving.
1400 chess.com blitz is fairly tough because the majority of active chess.com members are lower than 1400. This isn't to say 1400 is out of reach though; if you are willing to work hard on your chess, then 1400 is most certainly reachable.
Everyone is different, but I think I reached 1500 chess.com blitz after a year or so on chess.com. Despite me having no help at that time (no chess coaches, local clubs or even anyone in my family who played chess competitively with me), I worked on my chess just about every day and I worked hard on it. I watched chess videos on YouTube, read a little (mostly chess.com articles and I didn't really get too into chess books until later) and played lots of games (analyzing all of them I could).
Depending on how much effort you put into it (and how efficiently you learn), it might realistically take you are year or two to make, but 1400 is reachable for sure. I say a year or two because I know that most people won't put in the time I did (for personal reasons like schedule or motivation or whatever). This inherently doesn't make me that special though. Some have done it much faster than me; some players reach 1400 almost effortlessly if they are a prodigy at chess or something, but for most people it will take a lot of work.
As a guideline, chess "opening principles" helps many people get to 1000+ rating and after I reached 1000+ chess.com blitz, I looked into basic theoretical endgames and checkmates (great decision I never regretted). I remember being very confident in my ability to convert endings like an extra pawn or select same color Bishop endgames when I was around 1300-1400. This should give a rough guideline of what a 1400-ish player is.
To reach 1400+ blitz on chess.com, I'd probably work mostly on:
-opening principles
-study of basic theoretical endgames and checkmates
-tactics/chess puzzles with a consistent routine (preferably daily) with quality over quantity.

what opening do you know rated under 1200
I assume you mean @The_economist9 but when I was sub-1200 level. I played 1. e4, but I didn't know any opening past move 4 or 5. I played the Scotch Game a lot because that is what I learned early on (1. e4 e5 2. Nf3 Nc6 3. d4). My "opening theory" knowledge was this deep and I knew that if exd4 then Qxd4, but that was about it!
I basically continued with "opening principles' from there, but I didn't even know "opening principles" by name until after 1500 rating or so! Only then did I more formally learn this concept that I usually did intuitively after much trial and error. It is a big advantage to someone if they implement opening principles sooner than I learned them, so I hope others will learn what opening principles are soon after starting chess.

Very easy
Says the guy with 0 games played who spams the forum. Posting is easy, playing good isn't.

Very easy
Says the guy with 0 games played who spams the forum. Posting is easy, playing good isn't.
lol yes I think the op will realize that there aren't any "shortcuts" - just some things that can make long term improvement a little more likely.
1400+ will take most players a lot of work, but it is certainly reachable for those willing to reach it badly enough.

1400 Blitz on Chess.com is quite strong. But very reachable. I'd say 6 months to a year if you work really hard and a bit longer if you don't.
But you have to do the right things. You have to be productive in the time you spend on Chess. Do not get frustrated after losses and mindlessly spam game after game. Do not chase rating, chase improvement. It will feel more rewarding and you will enjoy the game more.
Always study your games, no matter what.
What kind of blitz are you planning to play? The blitz pool on Chess.com is smaller but stronger than the rapid pool. I think there must be a lot of reasonably competent players who just like playing 3 or 5 minute games.
When 10 minutes got redefined as rapid from blitz, my rating immediately rose by about 200pts. Switching to 5/5 to still have ~ 10 minute games, but called blitz I find it harder, so I'm sitting about the 90th percentile, vs the 98th in rapid. That difference implies that the pools are different sizes.
I also see quite a few of my opponents have a similar split in their rating about 1500 blitz and 1700 rapid.
If I were you, I'd stick with slightly longer time controls while learning a few basic openings before trying to pull fast moves.

What kind of blitz are you planning to play? The blitz pool on Chess.com is smaller but stronger than the rapid pool. I think there must be a lot of reasonably competent players who just like playing 3 or 5 minute games.
When 10 minutes got redefined as rapid from blitz, my rating immediately rose by about 200pts. Switching to 5/5 to still have ~ 10 minute games, but called blitz I find it harder, so I'm sitting about the 90th percentile, vs the 98th in rapid. That difference implies that the pools are different sizes.
I also see quite a few of my opponents have a similar split in their rating about 1500 blitz and 1700 rapid.
If I were you, I'd stick with slightly longer time controls while learning a few basic openings before trying to pull fast moves.
Blitz/Bullet = stronger at lower ratings but rapid gets harder at the higher ratings. I always see people say Blitz is harder, but after the higher ratings it's really not the case. So it depends on where someone is.
https://chessgoals.com/rating-comparison/

Pretty easy - stop playing Blitz and get your Rapid to 1600. Faster speeds will automatically improve.
Sadly, the reverse is definitely not the case.

I think high blitz and bullet scores is easier to achieve than high rapid scores.
I have to disagree. You just don't have any time to think and play a Blitz game. The problem for me is I like to play slow games where I try to get a small advantage and hold on to it. But in Blitz you don't have time for that better to be an attacking player I think.

In my opinion, I think blitz is quite hard. I'm still stuck at the 500 mark. Any advice on how to improve fast in blitz?

just stick to one opening and learn what you have to do against all replies. The rest is tactics really so practice the puzzles

It is difficult to describe because everyone learns at different paces and also because you never really know what a certain rating takes until you reached it yourself.
Similar to what @KingKev52 is getting at, the key is in taking steps. 1400+ blitz can be a "longer-term" goal, but first you can try reaching 900+ blitz for the "shorter-term" and then 1000 blitz then 1100, 1200, 1300 and finally 1400+. Naturally, 100 point intervals are just the example, but the point here is that you will reach ratings like 1400+ chess.com blitz by incrementally learning more and more and improving.
1400 chess.com blitz is fairly tough because the majority of active chess.com members are lower than 1400. This isn't to say 1400 is out of reach though; if you are willing to work hard on your chess, then 1400 is most certainly reachable.
Everyone is different, but I think I reached 1500 chess.com blitz after a year or so on chess.com. Despite me having no help at that time (no chess coaches, local clubs or even anyone in my family who played chess competitively with me), I worked on my chess just about every day and I worked hard on it. I watched chess videos on YouTube, read a little (mostly chess.com articles and I didn't really get too into chess books until later) and played lots of games (analyzing all of them I could).
Depending on how much effort you put into it (and how efficiently you learn), it might realistically take you are year or two to make, but 1400 is reachable for sure. I say a year or two because I know that most people won't put in the time I did (for personal reasons like schedule or motivation or whatever). This inherently doesn't make me that special though. Some have done it much faster than me; some players reach 1400 almost effortlessly if they are a prodigy at chess or something, but for most people it will take a lot of work.
As a guideline, chess "opening principles" helps many people get to 1000+ rating and after I reached 1000+ chess.com blitz, I looked into basic theoretical endgames and checkmates (great decision I never regretted). I remember being very confident in my ability to convert endings like an extra pawn or select same color Bishop endgames when I was around 1300-1400. This should give a rough guideline of what a 1400-ish player is.
To reach 1400+ blitz on chess.com, I'd probably work mostly on:
-opening principles
-study of basic theoretical endgames and checkmates
-tactics/chess puzzles with a consistent routine (preferably daily) with quality over quantity.
That would be easier said than done for some members. To do so would need a upgrade
Hey everyone, I have decided to set myself a goal. How hard would it be to reach 1400+ blitz? I am almost 900 blitz.