I really like this exercise from the book The Achievement Habit and I tried to illustrate it here with the example from the book.
Enjoy the infographic :)
Also check out this small diagram on how to break the example question from above here (in case it makes more sense) :
Try it for yourself with your own impossible life problem. I am not sure I get it completely, so hope I do a workshop out of this one and see how we can break an 'impossible' life problem into something manageable. Stay tuned! Any ideas feel free to write to me at firstname.lastname@example.org :)