So, I can't really answer this question. Since I was my own manager, I would have to motivate myself, and that can definitely be difficult at times, so my answer will be short and simple. I think that for me, my motivation came from interacting with people and making them happy with the product or the service that you offer them, whether a customer sends you a thank you note or shares positive feedback with you. That would definitely be very rewarding and motivating.