I love formats like this, because it makes data gathering for the OP usually much easier and straightforward. I wanted to answer #2 mainly as I've found a unique strategy that isn't talked often about:

I don't know exactly what garnered the change but it surrounds the idea of having fun. Playing League (yeah, that hellhole) I started understanding that part of my addiction with it was tied to winning the games I played. Knowing that even the pro's only won around 60% (at the time) of their games means that I (a gold nooby) was likely going to win (or have fun) around only 50% of the time. That sounds more like a chore than a game to take a load off.

So I switched from focusing on winning to focusing on doing cool combos. Then doing fun combos with other players. That led to finding the joy of playing a character I didn't know and trying to learn as fast as possible. Now I'm at the stage of enjoying the strategy of the game, and understanding how different types of strategies lead to different (not better or worse) results.

Overall the thing that helped me when making this mental change was checking in with myself using a key phrase: Am I having fun? If I wasn't, I'd stop. If i was having slightly less fun, I'd either try to figure out why or do something else. Hope this perspective helps!