According to Coach Heisman that's not a very efficient way to get better. Yes, you need to study, but you also need to play AND review your games. If any of the three are out of balance, your progress will tend to stagnate.
Oh I just checked your stats. You're a bullet and blitz junkie; well in that case there's no hope for you. Oh just kidding; bullet is rubbish for anyone who isn't already very good, but blitz can be okay as long as it's done in moderation. You're not doing it in moderation. Good blitz players rely on their store of patterns to move quickly. How do they get these patterns? By playing long slow games that give them time to think. You're not doing that, so basically you're just perfecting your errors. And what's with the ChessMentor? There are dozens of great courses you should be doing and reviewing. OK, there's your free pep talk from Coach 'Dog.
I'm thinking about stopping play for a few months and dedicating that time to studying chess. I think playing nonstop at this level is detrimental to progress.