Sober up and think it through
Sure, your idea for delivering kale smoothies in rickshaws sounded groundbreaking at 9pm last night, but does it still make sense this morning? If you’re not sure, do an informal poll. If people stare blankly, you may want to consider abandoning the plan before embarrassing yourself.
Research your competition
Scope things out to ensure you aren’t going to be entering a space with a lot of other players. And if you realize there are, find out what, if anything, sets yours apart from the others. Does the world really need a 500th weather app? No, no we do not.