In my case, what I really want to acheieve doesn't motivates me. I have goals which I really want to attain. But It doesn't motivate me well. However, people who are better than me motivates me. They are distinguished people, so I feel jealous or inferior. Because of this, I often do my best. For example, when I saw a person who has slender legs, I felt jealous because I had fat legs. So I have done my best to make my legs slender. lol