http://news.ycombinator.com/item?id=3655582 is a great post featured today. It's mainly focusing on depression but I think this is useful to any period of "tough luck" (technical issues included).

The best parts are the solution(s) and interpretation of the slow-periods: it's probably a sign you need to take a step back, see the whole picture and adjust accordingly to your goals. Reinvent and build!

Also, you might want to couple with a friend that has complementary skills, i.e. the ones you are not strong at (the whole point against the single-founder). If not, at least keep a constant connection to other founders.

Good luck!