I think that's a great trait that you have. I know not everyone has it. I worked for 12 years before I found out that I liked teaching. I took a demotion at my job to get a different boss. When I started teaching, I found that not only did I have a knack for it, I loved doing it! When it comes to motivation, we all feel differently. We emote differently. We find meaning in different ways. Motivation is finding that desire that makes someone else tick (or yourself if you're trying to find your own motivation), the "Why." I found that my motivation comes from enlightening others or seeing them catch a concept previously foreign to them. It perks me up. I also love to see people smile and I enjoy receiving compliments. Those are the things that motivate me.
What motivates you?