My mother always said, "I've earned my wrinkles!" as though a badge of honour. She is 95 and I recently took a photo of her which showed dignity, strength, age and beauty. Her eyes are still the same blue and her smile is as bright as ever. People are finally beginning to realise that older faces are beautiful. The number of actresses who are working in series and films now (such as Shirley Maclean, Diane Keaton, Maggie Smith) is very encouraging of this long overdue acceptance of the older female face (even if, perhaps, some of them have had a little 'work'!). Beforehand, once they reached about 40, actresses were not wanted. I think people are at last being educated to not be judgemental. I tell kids I work with NEVER to make personal comments about anyone.
I can understand how you feel. I look back at the few photos of me as a girl, and even fewer as a teenager, and see how very beautiful I was! The first person to tell me that was my husband, but I never believed it. My mother told me that vanity was a sin. Wasted years when knowing I looked good may have given me the confidence I so badly lacked. Now, not far off your age, I think I look alright and have some 'good' features such as hair and eyes. I do believe many of us have a different self-image than that of others who see us. Who's to say that the two dimensions of a mirror or photograph don't distort the real image. I think they do, for the worse.
As others have said, high SPF, water, sleep and exercise, and talking therapy may help too. Finally, I think anyone who has had children looks a bit older than someone of the same age who hasn't! Just my own observation. ? xx