From 1000 ideas one should definitely work. So although some say that stubbornness is the key to getting something good out of your work, I believe that it is mostly the combination of chance, timing and well planned execution. Keep in mind though that not all ideas click with people even when they are successfully executed.

My approach to this problem is very simple. I try to get out as many ideas as possible. I know that the majority of them will fail but some of them will work. This way I not only practice my creative thinking all the time but I also get a good exposure on quite diverse topics and problems.

So, do not waste time thinking whether your idea is any good. Just do it and see how it goes. You will see its real colors once you start executing it and you can always give up if it is too much for you.