I feel ya. I have anxiety and depression issues myself. The sooner you realize that when people put you down it's THEIR insecurities showing, the sooner you'll be comfortable in your own skin. I'm not trying to put your friends and family down, but if they're picking on your voice or anything else, that's on them. Your voice is YOURS, your small size is YOURS. Let them worry about themselves. Don't let them throw their rubbish in your back yard.