Psychologist, Harvard professor, and father of positive reinforcement, B.F. Skinner conducted numerous studies dating back to as early as 1938 that gathered extensive data on the effects of positive reinforcement. Skinner coined the phrase operant conditioning, which in layman’s terms is basically changing a behavior by giving a reward to elicit the desired response. Therefore, the opposite of positive reinforcement is punishment.
One recommendation from the industry pros during that session stressed that you need to work on more just one project at a time. And, they advised, you should not just concentrate on a project that is your “baby,” which can channel all of your creative energy in to that one piece of work. Basically, you don’t want to put all your eggs in one creative basket. Diversify.