Do Looks matter

[25 going on 65]

Well part of it is that while looks wane eventually, for most people that doesn't start happening before mid to late 30s unless it's by choice (bad habits, lack of self-care, etc.). For some it doesn't even happen until much later--Johnny Depp is like 50 now.
For those of us who started losing hair in our 20s (or even worse, teens), we HAD to start losing our looks at a time when everyone else is in their physical prime. 25, 20, or 16 is a horrible age to start going through something that you never expected to go through for at least another 10-20 years.

So it's true self-acceptance is a good way to happiness, but it's difficult when you're rushed into that stage years or decades before your peers.