I am one of those people that like to dive right into the deep end. When I make my mind up to be involved with something I commit fully. While this can be a scary approach, I often find that it is the best way to get acclimated quickly and learn fast.
I love the thrill of a new experience. It is exciting to learn new things and meet new people. I say just go for it. Let yourself be free of worry and fear. You will likely swim not sink, it’s human instinct.
So, the next time you are in a new situation, go all in. Throw yourself at it and embrace it fully. You will surprise yourself and fear will no longer hold you back.