I have severe feelings of worthlessness. any advise?

Get evaluated: Severe feelings of worthlessness can be a sign of depression. Please get evaluated by a psychiatrist/psychologist. During treatment session, try to work on what's triggering your feelings and what to do in crisis situations. Meanwhile, take an inventory of your positive self-characteristics; however small they might seem to you. Good luck!

Or trauma: I agree with my colleague that you could be depressed. Another option is that victims of childhood sexual or physical abuse can feel worthless in adulthood. If that is true, then consider starting therapy with a psychologist who works with trauma. Be well, .