I was a bit like this too about 20 years ago. But I did a course of CBT with a specialist therapist that taught me to track my negative thinking styles and thoughts, feelings and come up with disputations that I could live with - through group support therapy. I am sure your not a burden and your a worthwhile person to have around. I know that can be hard to hear with depression when the depression thoughts tell you otherwise. Take heart your amongst friends that care here. Different things will work for different people too. Hope you find what works for you best. Take care.