I have this issue all the time. When I start thinking that suicide may be the answer, I try to distract myself. When I can't do that, I make a phone call to my therapist, sometimes just telling him what is going on, is enough, other times it is what he says back to me that helps. This usually is an indication, for me at least, that I have too much on my plate, and I need to focus on one thing at a time for a while...like if I am at home, I have to do everything in my power to focus on home, not on work. It is hard. I don't know who came up with the expression "oned day at a time" but for me it is one second at a time sometimes.