Guys do you have strategies how you keep your A-game as long as possible ? I think this is crucial part of our strategy. Can someone share their struggles and how they overcame with different strategies.

I will start with myself first.

I used to struggle when I made mistakes at my limit and I had a pain that i would go on higher limit to compensate that previous mistake loss with trying to play good and get back my loss aka chasing after losses. (we all been there right ?)
Trigger: Making a mistake at current grind limit.

how I fix that?
1. I understood that even if I got back my loss back 5x on top - it's a failure! No matter how much you got back, your mindset is flawed. Instead I made for myself rule that I can play poker as long I don't make a mistake and when I make mistake it's a good thing. I have now opportunity review it and learn from it, it's a learning process.
Was that mistake because i didn't know what to do ? (technical mistake)
Was that mistake becuase I was boored ? (mental game mistake)
If that was technical mistake i would review on forum and that made me feel better because i improved my game.
If I made mistake because I was boored I just quit playing because i need to reset my energy or if you really want to play make a stop loss for 1 more buyin and quit if you make another mistake.

1. Another thing I constantly was reminding myself that checking your short term results is what will keep me back from progress and in long run it will only hurt me because variance is part of the game. Insted I was trying to focus only on my volume and keeping A-game as long as possible. (this is big one)

2. I was doing cashouts as much possible because i would check less my balance.

3. Be physically active, I try to get some running at least for 15min every day.
   Here is my blog how I approach game: https://www.runitonce.com/chatter/lets-approach-this-game-as-an-athlete-5/

Lets not be mental game fishes and keep looking for our mental game flaws.