There are many way to be enthusiastic person, and it's be different where how are you. Some people are more enthusiastic from the other. For example some people be very excited when they achieve target, they be very enthusiastic because they do what they want. The person how have a negative think they really not gonna be enthusiastic person. The people they be enthusiastic when they grow, because no one be enthusiastic from his self. When you want to make your self enthusiastic you need to remove all the negative though and put a positive though. I'm really enthusiastic person, because I love what I practice daily, for example I feel ver good when I can help someone in trouble. In concluding it's depend in the same person how he gonna practice his life and what he gonna though about if was a positive though or negative.