OK, what's so bad about you? Are you really that worthless? Are you really so fat and ugly? Do you really deserve the harsh judgment and low self-esteem you throw on yourself? Is your life really that difficult? Or are your standards unrealistic or impossible?
Take a break from all the negativity and stress, and tell yourself that you're OK. Be satisfied with what you've got, and how good you actually have it. See the bright side of yourself for a change, instead of constant self-assassination.
Get simple. Take things slowly...do what you can...give yourself a little love, appreciation and respect today...and every day!
See what's good about yourself for a change. At the same time, be realistic about what needs improving right away, and only do that. Make changes in little increments, not life-stopping emergency interventions all the time (like dieting).