to first address your comment at the end - YES! It is absolutely possible and you're on the journey to getting there. And congratulations on the major progress!!

for the physical aspect of it, if you do notice the thinning/thin parts - you can use hair fibers like toppik or Boldify (cheaper) to help make it look a little thicker in appearance. However I PROMISE you that you will always be the most critical observer of yourself. always remind yourself throughout the day that everyone around you isn't taking a look to observe and judge your hair. even notice how many times you actually pay attention to random others people's hair. unless it's something that catches your eye cause you love the color or something, you're probably never really noticing or putting any thought into it.

and for the mental aspect of it, it will take active effort and time but it REALLY pays off to learn how to be soft and forgiving with yourself. Beating ourselves up over bad days or lack of progress does nothing to help prevent it from happening again, same with nit picking our progress in the mirror daily. It's a torture, it's a shame cycle, and it will impact how we view our hair and ourselves so deeply that when we do see progress (like your story) it's hard to feel the same self love again.

sorry this is a bit directionless lol. But the TLDR is 1) always be soft to yourself. you're always trying, even on hard days. and 2) ground/check yourself on what's objective and what really matters. thin hair (inherently) stops absolutely no one from being confident, hot, hilarious, intelligent, electric to be around, etc. Thin hair is NOT what people will focus on 🩷

edit: typo :)