Middlegame books for 1800 USCF

Hello all,

I am 1800 USCF and I see now that when I play higher rated players that I do fine in the opening and if we reach an endgame I can usually hold my own, but when I lose its always letting them take too much space or something in the middle game that Im missing. All of my losses are slow positional losses.

I would appreciate if someone could recommend any middle game books to help me learn more about middle games.

You're alive!

Good Positional Chess, Planning & Strategy Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/introduction-to-positional-chess-planning-strategy

It is hard to suggest anything, without knowing something you already read. For example have you read My System or Zurich '53? Also positional chess is a broad term. Maybe you mean strategical chess?