[helen842000]

I think the key bit is 7) Gets tired...

If you get tired of working on a profitable side project - sell it! Don't refund users or abandon it. There are lots of people that would like to get started and learn from an existing product.

Decide what is the most enjoyable part for you. Finding the idea, building it, solving problems, selling? Try to do that more.

Maybe you end up building SasS products for other people, partnering on a project you really love.

Like you say, you can't keep doing the same thing over and over and expect different results. The only reason to do something over and over is if you enjoy it.