Ask HN: Has anyone here turned around their life in their 40s?

I know the best of my life is behind me, but I need help salvaging what's left of it. I've been meaning to ask for help for a couple of years now, but only now got around to it after being scared by my first real suicidal ideation a few nights ago. HN is probably not a suitable platform for this, but /r/advice seems to be not very active and I can't post on /adv/ due to some IP range ban. There are no mental health facilities in the small town where I live. I let my professional network decay and die, and there is literally nowhere else I can get any kind of useful, actionable advice. I'm a 43-years-old single guy, NEET for the past decade. I got my Master's in the US in the late 2000s and was gainfully employed there for a few years (NOT in my field of education; long story) until I had to return to my home country to take care of my ailing father. He passed on within a year of my return, leaving my family with a financial mess, and his dea