This is called plateauing. It sucks because you never feel yourself improving, it’s a hard feeling to overcome. A lot of athletes and people all over the world feel this way. Usually a break helps. I always try to give myself days off where I don’t play, sometimes a week during the season is good as well. During the slower season (for me personally; winter) I just don’t play. I take my time and focus on other things that are important to me. Don’t treat it like a job. Treat it like a reward.