Anyone got any recommendations

I've started to notice a dangerous pattern when I play midweek - start playing tight, do reasonably, then, as I get more tired, there's a hand where I'll do something really stupid (a ten-second-tilt) & I'm out on my arse - again.
Don't really want to pop pro-plus etc - but with working fora living & the late games if you want to play live, I'm struggling a bit.