I understand what you're going through! I have to put myself in "time out" when I get like that. I just push the world aside for awhile (it will all be there when I get back.) & Focus on getting myself together. Alot of words beginning with "re" comes to mind. Retreat, relax, regroup, refocus, regain control, & restart when you feel refreshed. That is my mantra. When I'm overwhelmed, it helps me to take a step back, wrap my head around something else for awhile & then go back to my old situation with a new perspective. I hope things get better for you soon!