This is actually true only to some degree. Of course, you can't create your own full-fledge game, but in terms of automation you can do a lot. You like to listen to certain radio, but it has shitty interface? Build site/app/etc to address it! Yes, it will be small and won't do anything else, but for you it will be helpful, so you will do it with passion.

The same applies for other "utility" stuff – you can create your own flashcards service, which will be super convenient exactly for you, and so forth. So, don't underestimate yourself – software often is good only to some use-cases, not for yours.