Yes, forgetting your rating goals and trying to find good moves is one of the most difficult things in chess
But performance psychology shows that to get good results, it's better to be focused on the process (what should I play now ?), than the outcome (I want to score 7,5/9 in this tournament so I need a win in this game)
As always, hicetnunc answers are excellent.
I was thinking some days ago what would happen if I'll stop thinking about "getting to 1500 after one year on chess.com" and focus all my attention on the next move I'll make. It doesn't matter if it's a tactical quiz on chesstempo or it's a 30 min game. Making the best move will take me to a higher rating so I guess it makes sense.
I have to test this and see what's happening.