I tend to do something similar, I’ll play pretty heavily for a week, then take a month break and just cycle through games like that. When I’ve been playing for 2-3+ hours consecutively I tend to start getting salty, the best tricks I’ve found is to really try not to care. Here’s a couple ideas:
Choose your most fun mercs (not necessarily your favorite mercs, I love Arty, but playing well with Dreiss is too stressful to keep up for me) and just go ham, forget the objective if you have to, just see what you can do.
Set yourself up for failure, I like to start out play sessions with only using pistols sometimes. If I do poorly I don’t beat myself up about it, cause I know I’m handicapped, so it gives me a chance to warm up. Knives work too.
And these can be useful to just do one maybe two matches after you’ve been at it for a while. It’ll give you a chance to cool off. And don’t yell at people in chat, you’ll just stress yourself out.
This is a real Signature.
EDIT: I haven’t posted in a while, I guess I need to figure out a new way of making a sig. This is gonna be difficult difficult lemon difficult.