In Japan, it is thought that people have an innate power to not only overcome and persevere but to also excel. When children get to be a certain age, they have something called iji or willfulness which causes them to act out or misbehave. It is the teacher's job to push the students to change their iji into konjou or fighting spirit. This transformation process requires a large amount of strict discipline which sometimes causes the student to dislike the teacher so much that they use this anger or hatred to drive them to excel.
The problem with using negativity as motivation is that we become vessels that are only fueled by hate, anger or fear. That negativity isn't healthy and leads one to lead their lives with a kind of "scorched Earth" way of living. Results or not, it is toxic and unhealthy and will eventually take its toll. A fake quote by the Buddha that is still apropos is, "You will not be punished for your anger, you will be punished by your anger."
There is a great song lyric from punk rock legend, John Lydon is "Anger is an energy." Anger is an energy but it's not clean energy. As Yoda remarked, "Fear is the path to the dark side. Fear leads to anger. Anger leads to hate. Hate leads to suffering.” We should be careful not to let things like hate, anger or fear motivate us regardless of the reason or results.