Like Marco Alka, all started with a hobby.
Then I took specialized courses and now it's my day-job for more than 10 years.
BUT, it's not really my hobby anymore.
Though I enjoy programming at work, I don't open my text editor as much as I used to do once I am back home. I play video games or watch videos instead.
My problem is that I always want to start many things and never finish anything (sounds familiar?) and that made me loose motivation.
Also, family life and stuff, not enough time to do everything so I try to prioritize differently.
Other hobbies? Fountain pens, para-cord, photography, music, driving...