If you already suffer from depression on a regular basis, hair loss can really be the last nail in your coffin.
I always have moments of depression in the winter, but since I had my hair transplant, it's relatively easy to still have a glimmer of hope and get out of it.
You know you have things to look forward to, because you like the way you look and people do too (unlike when I was a slick NW5).
But when I was bald, damn it was difficult to get over those feelings of depression. It was just an infinite black void with no way out.
I know it's because I suffer from a mild case of bipolar disorder, but before hair loss hit me, this was very manageable.
Same with my social anxiety and self-esteem problems, they are still there to an extent, but you can get over these if it's all you have to deal with.
Add hair loss in your teens to these problems and you're like "Oh come on! I was playing life on Hard mode and now you're telling me I have to play on Impossible?!"
That's how I felt. And as zircon said, you have to deal with these problems head on. You can't pretend they don't exist and say "f-ck it, I don't care about anything anymore"
Been there, tried that, it just doesn't work. Because people will remind you of your true value, it may be harsh to hear, but yes, you will be judged on your looks and your ability to function normally in society.
There's no way around that. Either you conform, or you live a life full of misery and loneliness. And no, it won't be OK, because social interactions and validation are basic human needs that need to be fulfilled.