Sorry that its effecting your mental well being so much. Just remember almost everyone experiences some type of hairloss eventually..... So most people never have the hair of their youth into old age. I understand your only in your twenties (I had all my hair through my 20's , though it went through many stages of looking great and looking like crap and in my 30's noticed some thinning changes.) Now in my mid 40's sure its thinned but has slowed and I can still pull a full head of hair off.(most days) Plus i have taken care of my health and look much younger for my age.
You know you do get used to it at a point. You begin to realize that the older you get no one really gives a sh*t anymore and you won't care as much anymore as well. I find myself thinking that in ten or twenty years full head of hair or not I'm gonna have aged negatively in looks and internal health in so many other ways hair will probably be the last thing on my mind. Good luck and do your best to keep it in perspective.
I would just note not everyone loses hair into old age. A smaller percent keep most if not nearly all their Norwood 1 hair from when they were 18. I think everyone is kind shooting for that ideal or at least I am. Have/keep the most hair possible. As long as your living your going to care to some degree what you look like maybe hair wont matter, but to some people it will. One persons opinion doesnt alter everyone elses.