Get nervous around people and voice start trembling for no reason

I went through a stage where I was just alone so much that I started to lose my confidence , I even had trouble just going into a shop, did anything to avoid it.
After admitting it to myself finally , I started facing things and people again and tried to hold firm . Had a little saying in my head - I'm just as good as them, they're not making me nervous f'k that. In time it started to work and I'm good to go again now.