Use to do hand drawn self-portraits, once upon a time, not using tablets or any of the computerized table setup for that kind of thing - i mean old school charcoal, graphite, pastel and markers. When i got upset about drawing, I draw some gruesome stuff or dick around by drawing doodles, random stuff, the kind of scattered brain stuff that can either make you laugh or be a great time killer. I write in my spare time instead of drawing because wanker's cramp is a bitch when using a tool to draw several hours in, but that's besides the point.
I find that music helps incredibly well, works if it sets you in the right mood. For me, my go-to choice for music is trance or really good industrial rock to keep my focus but if i'm pissed and need to fuel the rage: hybrid orchestral soundtracks and music with high energy that would get my blood pumping.
Another technique is meditation or reciting mantras. I keep telling myself: "you can always fix it, nothing is permanent", "take your time, nothing else matters", "whatever is going on, this is what I AM doing right now, everything else can wait". Whatever helps you sort out your priorities and value what's more important in your life, can be a great motivator for the right state of mind.
Hope this helps.