One of the best ways to feel better about yourself is to look at something you did a few years ago and compare it to now. I read a story I wrote on a different account from years ago (it was horrific) and looked at it next to a screenshot of the best written part of Excalibur. I've never felt so good about my progress before.
Even comparing my newer works to some older stories on this account. The grammar has made a huge improvement, but things like pacing, well-timed humor (NOT when people are in times of distress), character development that actually makes sense, and understanding basic psychology are things I'm very proud of. Also, choosing realistic reactions over cliché fanservice is something I'm glad I've switched to XD.