What made me 2700+ chess com. Chess improvement.

These are types of improvement methods in chess.

1) Constantly playing online and analyzing all games. 
2) Studying a book, taking inspiration from classic games, and trying to implement them in the games. 
3) Watching chess video series - trying to implement the learnings in the games. 
4) The personal coach's learning through classes is the most concentrated study. ( ideally 250-300+ than your FIDE rating rated coach. ) 
5) Group class learning is not that intense, but they do help : ) 
6) Analyzing all games with friends over the board.
7) Just playing offline tournaments and analyzing them. 
8) spending more time on chessbase. (All features in chessbase are made for just chess improvement. ) 
9) Following top-level tournaments and trying to understand why they make certain moves. 
10) Puzzle solving. Ideally, puzzles that would you think for 30 sec+ to 5 min. Only then one get the answers to them. (Thinking-provoking puzzles. )

A healthy mix of at least 5-6 points of them works well. By just following 1 point of these points, one won't improve much.

That's some great advice. Thanks for sharing

Wow! That is a lot of ideas and possibilities! Just goes to show how much work goes into acquiring such an amazing 2700+ rating!