Several solutions to the OP's predicament are being advanced with a fair amount of force, and I'm finding that I don't really believe any of them. I do believe that the advice is being offered honestly and in good faith. It's also clearly a good idea to cultivate healthy habits, stay active and meet people. However, I have tried many potential solutions myself and have encountered many false summits, and the tone of the most forceful advice here matches things I would have said to myself when I was camping on them. When I imagine myself taking the advice, I can easily see myself living through the familiar progression of triumph, doubt and disillusionment.
Maybe some of us are just wired for shame, loneliness and regret, and are searching for our safe harbor (to mix in another metaphor) where we won't have to struggle or prove ourselves anymore. That thought counterintuitively makes me feel a bit better. It gives me a reason to not feel ashamed and regretful _about_ feeling ashamed and regretful, and it reifies a system that, whether or not it's the work of humans, is clearly oppressive, which creates the opportunity to find meaning in resisting it.