I grew up for years, no confidence, no high opinion, no nothing really.
The years went by and stayed the same.
I didn't seek attn though to be honest, but it was not a good place to be, having no confidence.
Anyway, learning to get control of my life and not be told when and where I could do things anymore, was what I had needed for yrs.
I am confident in general, as I believe in myself fully and no doubts the person I am at all.
I don't worry now.
I hope you gain confidence sooner or later - I am sure you will though. If I can do it, literally anyone else can, who is in the same position.