All Eggs in One Basket.

Probably some of the best advice I can give is this.. Too often when starting a business people chose too many ventures to persue becuase the thinking is this gives the best chance at finding something that works. Ironically, this is the same strategy that ensures nothing will probably work. Pick the one major thing your most interested in and truly excited about and spend 90% or more of your effort there. You're not judged by how many baskets you try to carry, but how many you get past the finish line.