When is enough, enough?

When do you say enough is enough? Here it is March 9th and I have not attempted to change the way I eat. I am tired of feeling gross, unhappy, embarrassed and lazy. I am so ashamed of the way I look that I don't want to see friends that I haven't seen in awhile. It shouldn't matter but it does. Yet I do nothing to change. What point will I say enough, I am worth it...