Yes I feel that too. It's probably self confidence issues, I think mine is caused by being closeted and I feel like I don't deserve anything and nothings really meaningful.
Like if someone is nice to me or gives a compliment, it's not really me they compliment.
I feel like I'm watching other people live their lives and I'm just a background character. Everyone tells me their problems but I don't tell them mine. Same as you, keep cards close to my chest always.
It's hard to feel equally important as other people, I know we both are but ugh.
I'm always surprised at how many friends I have.
I did get therapy recently and it's nice to have someone listen even if they are just doing it for money.