Is my personality the problem?

I’m a junior since September and I’ve been struggling mostly with, how should I say it, self-promoting. Other juniors in my team send every achievement (even personal) to the groupschat or via mail but I simply don’t share anything, also not during team meetings. A senior had to push me to share my contribution on a matter bc otherwise I wouldn’t have said anything.

I feel like maybe I’m not the good match or I should change myself but how? I’m someone who doesn’t speak unless spoken to. Some days I barely speak and I do feel invisible. I just don’t feel worthy enough to talk about myself or about anything to others. I started thinking seriously about it since I started to realise others are trying to fill in the gaps with their own assumptions that are just assumptions and not true and I might lose control.

Author: Silver_Record_4494