What's your stupid gaming confession?

I played through the entirety of The Getaway on PS2 without realising you could heal by standing next to a wall. Your guy auto leans on them til you recover health. Basically played the entire game on hard as nails mode and raged the whole time at how stupid it is you can't heal. It was a shambles.

What stupid things like this had you hang your head in shame years later when you found out?

Bonus confession for the same game: It took me about twp hours to realise your cars indicator/turn signal was telling you how to get to the next objective. Drove around like a moron.

Obviously didn't pay attention to tutorials when I was younger