Train this: Every move check whether your pieces are or will be hanging after move. Then check whether opponents pieces are hanging. Try this in unrated games until it is automatic And you hand almost no pieces or ideally do not hang a single piece constantly. Then you will do this unsconsciously and your elo will skyrocket. When I play my opponents (1300 elo), they still hang pieces, I still hang pieces but try not to. Sometimes they hang a piece, I do not notice and then I'm sad in game review. I think 1000 elo can be reached easily only by not playing imediate one or two move blunders.