The older I get, the more I'm learning that I can just trust the way I feel.
I can't find the quote, but I remember Pieter Levels saying that when he gets anxious around people, it's not his fault for being 'anxious and weird' but it's actually his body telling him that there's a disconnect between him and these people. When he's around the right people, he never feels insecure.
The more I listen to what's going on inside me, the more I see that he's right. With the right people, things just flow. With the 'wrong' people, I always feel a bit like the ground underneath my feet is shaky.
It doesn't mean that there's something wrong with me, when things feel uncertain. It just means that it's not a good match.