Level up the character you never log out of.
Best on desktop. Open tickgaming.com on your computer to get the launcher.
Skills treats real life the way a game treats a character sheet: pick something worth getting better at and actually train it. Hiking, running, and walking routes near you; where the fish are biting this week; guided tutorials for Unity, for working with AI, and for whatever you want to be able to do next. Every session you log is progress on a skill you keep after you close the app.