I always wanted to be able to ride a unicycle. Picked one up in my late twenties and spent a lot of time with it in our garage. Never was able to balance for more than maybe ten seconds. Forward movement wasn't happening.

Well over a decade later I'm thinking I probably should have had more space to move around, and start with moving, not balancing. I did it in the garage because I was terrified to fall and I could grab the walls or rafters.