It's easy to have an idea, but it's another thing to commit time and effort to it. Quite a few of us have visited a company called K&N Management. They are a remarkable restaurant company that we have sent many people to, to learn, observe and benchmark with them. They have taken us in over the years and shared with us how they've become so successful.
One question that was brought up to them recently was, "Aren't you afraid people will take your ideas and compete with you?" Their answer was simple, "Many people come through and see how they create great success, but very, very few actually follow through."
My encouragement for you today is, if you have a great idea, don't allow negative influences to stop you. Or, if you're waiting to begin, start pursuing your great idea today!