Getting Hypnotized?

I plan to get hypnotized soon in order to improve myself in some way. The question is whether I should get hypnotized to lose weight, or to alleviate my fear of public speaking (and similar publicly social situations). Some people might say that hypnotism doesn’t work, but I know myself, and I know that these problems that I have are simply psychological, I just can’t seem to overcome them. So I leave it to you, Yahoo! users, what would make me a better person, being thinner or being comfortable in front of a crowd?