Like, times when you think you're stuck or that you broke the game somehow or something is "poorly designed" or just generally inconvenience yourself when in fact you just somehow managed to forget about a basic game mechanic. Some examples off the top of my head...
Breath of the Wild - On Eventide Island you need to put balls into switches all over the island in order to activate the shrine. One of the receptacles for one of the balls is situated on a small island off of the main island, and you need to get the ball into it. It's just far enough away that you can't toss the ball over, but close enough that it looks like you could get it there through some alternate method. So I started trying every way I could think of to get the ball over there. Mostly this consisted of trying to cut down nearby trees and make a bridge out of them, or attaching octo balloons to the ball and blowing it over before they popped. It wasn't until about an hour and three complete resets of the area later that I remembered that I had an ability to create stepping stones out of water since the first 20 minutes or so of the game.
Metroid: Samus Returns - I forgot multiple times during the game that the Spider Ball existed. Including multiple puzzles that made use of it and two late game boss battles where can use it to easily avoid damage.
Xenoblade - I forgot you could fast travel between landmarks after doing it once early on. I didn't remember that fast travel existed until I got to Satorl Marsh, spent a ton of time walking back and forth in Bionis' Leg doing the camp sidequests.
Breath of the Wild - On Eventide Island you need to put balls into switches all over the island in order to activate the shrine. One of the receptacles for one of the balls is situated on a small island off of the main island, and you need to get the ball into it. It's just far enough away that you can't toss the ball over, but close enough that it looks like you could get it there through some alternate method. So I started trying every way I could think of to get the ball over there. Mostly this consisted of trying to cut down nearby trees and make a bridge out of them, or attaching octo balloons to the ball and blowing it over before they popped. It wasn't until about an hour and three complete resets of the area later that I remembered that I had an ability to create stepping stones out of water since the first 20 minutes or so of the game.
Metroid: Samus Returns - I forgot multiple times during the game that the Spider Ball existed. Including multiple puzzles that made use of it and two late game boss battles where can use it to easily avoid damage.
Xenoblade - I forgot you could fast travel between landmarks after doing it once early on. I didn't remember that fast travel existed until I got to Satorl Marsh, spent a ton of time walking back and forth in Bionis' Leg doing the camp sidequests.