first thing's first: WELCOME!
as i'm sure you know, "aggressive" is a word not often associated with ball pythons, so something must be off.
okay, so we're going to need to learn a bit more about your snake and your husbandry before anything: what is the size of the enclosure? i'm assuming it's a glass enclosure, so are 3 out of the 4 sides covered? how much does the snake weigh? what type of prey do you have to offer? does the enclosure have decorations? what are you using for hides? what are you using for heat? how are you regulating your heat source(s)? did the snake come from a pet shop or breeder? also, how does the snake react when you hold him?
answering these questions will help us help you, and pictures always help!