Ideas are as plentiful as the sand on the beach and the stars in the sky. When you come across an idea, play with it, think about it, run it by a friend and then you can decide how good the idea really is. But remember the idea itself has little or no value on its own and you can always find another idea, as they are plentiful and everywhere.
Ideas may be as plentiful as sand and stars, but they are really seeds. If you decide to do something with an idea it must be treated like a seed. And ideas, like seeds, need to be given a lot of work and effort or they will not grow. So, if after you have given consideration to an idea you discovered, you must then decide if you are willing to give it your full attention and effort to assure it will grow, if not discard it and keep your eye open for the next idea.