Cowboy, you just gotta get back on the horse and in the rodeo, even knowing you will get thrown again. That is very hard, with your spouse and now your father. Do take some time for yourself; it is the giving and not refilling one's own coffers that can cause a lot of distress; remember the airline rule to put the oxygen mask on yourself first before you help others/your children.

You have to hang in there for them, they cannot hang in for themselves. My mother died when I was 3 and I cannot imagine, with my own problems, how my father dealt with a career and his wife so ill and dying for 6 years (brain tumor). But he did and I'm very grateful, in my own life. When my stepmother was dying I joined the National Caregiver's Association:

http://www.nfcacares.org/

That offered a little information, help, and lots of ideas to try to help myself with.