do tactics.
So cliche it actually hurts to read it spewed once again. Let me counter, as i once did, with do visualization exercises and go over games with advanced player input from positions where you didn't know what to do (not necessarily positions where you messed up). The idea is to hone in skills that are the invisible building blocks to tactics and positional chess and all that is touted as the way to get better in chess...
MORE tactics. And positional chess.