I'm currently in a tournament and I'm losing terribly. The problem is that I never implement the strategic things I learned in books (reassess your chess, my system, etc...)
I just calculate some random moves and hope my opponent blunders which he never does. Because of that I drew a game against a much lower rated person than me.
Also, I often overlook 2-move tactics that win a pawn.
Should I create a checklist of things to look at for every move? What could this checklist contain?
When I'm playing on lichess.org (blitz), I suddenly know everything and apply all of those things. I suspect, that I'm irrationally afraid of certain moves and then try to counter those moves.