Flip through your old notebooks. The kid who wrote that would be amazed at what you can do now.

Progress is invisible from the inside because the person measuring is also the person changing. Every new skill immediately becomes normal, so you never get to feel the gap. Old handwriting solves this. The stuff you struggled with on those pages is stuff you now do without thinking, and the kid holding that pen had no idea it would work out.

Go and find something you wrote or made two or three years ago. Read it without cringing, if you can manage that, and mark one thing that is now easy. Keep it, because in two years it will do the same job for whatever is currently defeating you.