I can pay my rent and bills from investment income and capital gain on investments. This is, of course, not remotely guaranteed, but over the last few years it's worked out. I do still work, though. I did it by putting large amounts of my income into low cost index funds focussing on various sectors, and some specific shares that I thought would do well.
Thanks for the feedback. Could you clarify if you only use the capital gains? I have read that dividend stocks are also a good way to have a passive income. Additionally have you thought about what you would do in case of a market downturn?
All my dividends get reinvested. I'm in the UK, and I've taken full advantage of the tax free savings scheme, currently allowing about 15000 GBP a year to be put into stocks and funds with no tax to pay on dividends or gains.
There have been market downturns during the time I've done this (started around 2005). Generally, during a downturn, I scrape together as much spare cash as I can and invest it in things that seem cheap. April 2015 to April 2016 was something of a downturn, for example, and I ploughed extra money into the markets while prices were low.