Hi, "failed" founder here. I didn't make a million dollars but basically got acquired for about 3 years of not taking a salary.
One thing many people forget about startups is that you're building assets, not revenue. The company, the code, the whole customer acquisition process, customer loyalty... all that is worth something to someone and can be sold at a price. We were acquired by a startup that just wanted to grow faster. It was another sales channel for them and far cheaper/faster than putting marketing dollars.
So there's rarely ever truly a failure. Just waiting for the right buyer if you've built something decent. This is usually what they mean by "don't die". I found that it's easier to sell a company than get investors, though.
After that,
1. A VC who didn't invest gave me several fun jobs teaching programming (his core background was education). I've been doing it on and off for 3 years now, training for programming certifications, and it's been a good portion of my income and connections.
2. Joined a couple of startups as a CTO, all fellow founders who I met in accelerators. They didn't go well and maybe I was not competent enough for them. Maybe they just had limited resources.
3. Joined a Big Corp. Friends thought it was not part of my personality to do so. But really, it was trying something I hadn't done, and proving to a relative that I could. It seemed like a step down, so I stopped after half a year.
4. I regularly get and turn down CTO offers, sometimes two a month. Many were more established and well funded, but I'm not willing to commit to them.
5. I went back to freelancing. I make about 5x more than I did before my startup. I specialize in MVPs, so my startup experience is essential to current income.
But notably, I didn't have a lot of options when starting a startup. Had I gone the non-startup route, I'd be working for a company in some large team, making $1000/month in a developing country.