There’s something you used to be really good at. You practiced all the time and you made the time to practice.
Other stuff took you away from practicing your craft so much. School, work, family, life in general, or sometimes there’s a global crisis.
Maybe it’s been years and you’ve convinced yourself that you lost it, that you used to be good, it’s all in the past and that’s that.
Go find it again. It’s still there. You may need to dust it off, clean off the rust and start from the beginning. Pick it back up, one small piece at a time.