Successful ideas comes from keeping and open mind, if you are blinkered to opportunities they will just past yo by and your competitors will take them up and beat you with them.
An open mind therefore is vitally important because these ideas can come at you from any angle. Some of the best ideas come from the least expected places and sometimes seem stupid or impossible from where your experience is right now.
You have to try and explore the world with a third ear and eye to catch these precious moments of inspiration. Look and listen to things trying to put yourself in a different position, this sometime means getting out of yourself and listening to others who may see things differently from you. Take the alternative views and it turns impossible ideas concepts that you would never have thought of now possible