Hypnotizing People

I have taken an interest in hypnotism lately and so far I’ve been able to successfully get people in a trance. But when I have them do things, the results are always minimal. I told someone to do something that required them to talk and get up. All they gave me was a pathetic mumble. [...]

I’m 15 and want to do better in school. I don’t know why but, I just don’t have the drive. I also want to become a better basketball player. Can someone tell me how to hypnotize myself for these two things please?