You are not morbidly obese.

I do not believe that you are ugly and you are definitely not worthless.

The fact that you entertain the above in your mind shows that you do in fact have a self esteem issue.

Who said that you need to go to therapy 2-3 times per week? I am skeptical about that. I do think that some form of traditional therapy, once a week, could be very helpful for you.