VOLUNTEER! So many places, so many people. Your help is neede. YOU are needed. You absolutely have value. Look over yourself, within and without.
Are you a good reader? Have you any idea how many people suffer in nursing homes, hospitals, and other places because they have no visitors, and little if anything to entertain them? I used to go to my local VA hospital and made rounds of the long term patients. I chatted, played cribbages, read their letters, poured the darnwater pitcher they couldn’t reach. I have done the same at nursing homes. You don’t want to know how sad was the county care facility I visited when I was a kid. Back then, it was also where poor unmarried girls went to finish out their pregnancy. I met a teen girl who was soooo lonely
You could volunteer at a food line or food bank.
Zoos and museums use volunteers.
You could volunteer at a shelter.
It would be great for your self esteem to do volunteer hours. It would be great for the people (or animals) you are helping. It also looks good on a resume.
If you have trouble deciding where to volunteer, talk to a probation officer. They always have a great list for sending people to do community service.
You are NOT worthless. Just put your worthiness to some tasks. :-)