be more talkative

I can be talkative if and when I want to, but lately I’ve been lethargic to starting or contributing to any conversation. I have no problem communicating with people over topics I have great interest in, i.e. music, books, etc. however there are times when I find myself stuck, at a loss for words and even paranoid. I worry about being judged for the things I say and the way I say them. However, lately I’ve tried strategies to ease the tension. I keep reminding myself that I shouldn’t keep my mind so preoccupied with assumptions of what others may or may not think of me.