In my opinion it should not be that you dream of making a living out of game development but more so that you dream of having a completed and released game which is an achievement in itself, and then continue to make games as a passion whether they make money or not.
I am in a similar situation to yourself and if you have a steady job in the games industry then the money made as an indie dev shouldn't matter as much, so you can enjoy the process of making games. You won't need to frantically ship out cheap and tired mobile games in the hope of making some easy money, but also you should keep an eye on the scope of a passion project and not spend years on it for it only to be half complete and unused.
Think of an idea for a game you want to make and try and complete it, which admittedly has been the toughest obstacle to overcome for me as I've found keeping interest in one idea to be one of the hardest things to do as an indie dev.