I want to feel good.

I want to feel better about myself! I'm 21 and i used to be really spunky and cute and had a great personality. Now I feel as though I am so shy, unattractive, and boring. My fiancé says he's noticed the change over our 4 years together but that he still loves me. I stopped playing guitar, singing, painting, drawing, and everything that I used to love doing. I can't tell if i am depressed or anxious or what. I am sure I need to talk to somebody but I can't even make that phone call for an appointment: I just keep saying "I'll do it tomorrow". Anyone else ever been in this situation? How did you handle it?