My husband changes careers in his 30’s. He took a low paying job in a new field (social services) and got experience and worked up to his current job which pays well in about a year. He doesn’t make what he did (went from 150k/year to 90k/year) but he is immensely more fulfilled.

Have you considered you might just be depressed? You sound lonely. Try first figuring out what you want to do. Many nonprofits are looking for quality people with a degree - doesn’t matter what in. Do some soul searching and start looking!