Top tips on how to break past 1300 elo? Or even get to 1500?

I've been playing chess for about two years by now, and have reached 1330 as my peak so far. Do you guys have any suggestions on how to reach 1500, and become an advanced chess player?

You should learn most important principles of a chess game. That will give you a solid understanding of a chess game and you will know what to do in every position. Then, you should optimize your calculation so you don't miss tactics in your games. Your rating will skyrocket. I can help you with all of this. Message me if you are interested.

Learn relevant chess principles, and try to be as focused as possible during games so as to not make mistakes. Additionally, analyze games to improve upon your mistakes (i.e. moves you missed); this, by far, will lead to a significant increase in your rating with time.

Always check your intended move is no blunder before you play it.
That little mental discipline is enough to reach 1500.
Hang no pieces, hang no pawns.
Sit on your hands.

That’s actually not true, but you know that already.

Now you tell me. I can't tell you how many hours I've wasted playing, thinking, studying, watching videos, and reviewing games in tedious detail....and I'm still not at 1500. I had no idea it was that easy. 

Improving Your Chess - Resources for Beginners and Beyond.....
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond
https://www.chess.com/blog/RussBell

"Just don't blunder bro!" is not really actionable, nor is it realistic to expect somebody with fundamentally flawed tactical play (which is what a lot of people suffer from at our level) to suddenly stop missing or exposing themselves to every fundamental tactical motif on the planet.  It's better to chunk it into something more manageable. 

Something I'm working on (now that I actually have time to think about chess improvement) is reducing the blunders I make from the act of being pinned, as I have identified that as one key source of a lot of blunders I make. To do this in rapid, I put myself through the following four questions: 

1. Are any of my pieces pinned at this moment? 

2. If so, what pieces/key squares is my pinned piece protecting? 

3. Can my opponent pin me after I make my move? 

4. Is there a pin I can possibly exploit? 

This is infinitely better than putting yourself through an exhaustive laundry list of forks, pins, discovered attacks, double attacks, skewers, X-rays, defender removal, deflection (need I say more?) because a) you are doing something actionable and manageable b) you are training the extinction of flawed mental habits in chess, and c) you are building the habit of actively training during a game instead of only outside of the game. 

What I suggest is to look at the last ten, twenty, or even fifty games of rapid that you've played and identify the three most common blunder types, starting from the most fundamental (hanging a piece, counting errors, basic forks/pins). Then, for the next two or three weeks, use a similar system of questioning that I am using for each move after deviation from book openings. You must do this for every game you play and every move in that game for this to work.  

After the two or three weeks, if you see yourself blundering less to this particular motif, then good. It means you have improved, and you have more or less automated a good habit in this particular tactical idea. Move to the next one, then lather, rinse, and repeat.

@6

"playing" ++Good
"thinking" ++ Good
"studying" ++ Good
"watching videos" ++ Not really useful
"reviewing games in tedious detail"
++ Good, especially lost games, but you need to remember what you learn from your mistakes.

"I'm still not at 1500" ++ Do you blunder check before you move?

@9

"Just don't blunder bro! is not really actionable, nor is it realistic to expect somebody with fundamentally flawed tactical play (which is what a lot of people suffer from at our level) to suddenly stop missing or exposing themselves to every fundamental tactical motif on the planet."
++ I do not say: do not blunder, I say: check your intended move is no blunder before you play it.
Think about your move and decide.
Then imagine your intended move played on the board.
Then check it is no blunder.
Only then play it.

Thanks guys for your advice, all of your tips were greatly helpful

After 18 months?