

Abusive ex didn’t let you fucking sit? That’s a lot to unravel and the likely source of your trouble. Like if you have anxiety or trouble relaxing physically or mentally you should talk to a therapist about it and do some research. I also recommend doing light and soft exercise like yoga and stretching to help with you blood flow and legs. Improving that seems tricky but very doable with some time, focus, and kindness.
At work and in game, every 90 mins try to take a 5 min breather and relax as much as possible, definitely stretch.
Beyond that, keep in mind how much sun and socializing you are getting and eat a protein heavy diet. That can drastically affect your stamina and will.
Beyond that it’s a matter of pacing yourself, being happy, and doing what works for you. If you don’t want to game, don’t force yourself to. Sometimes just watching tv and building something is better for you and your joy.