Prevention: One can apply pesticides (a substance used to destroy insects or organisms harmful to plants and animals), to the body in order to limit the tick's habitat. One can also used insect repellents to prevent the possibility of ticks biting. Also, be vigilant of your environment... if you have to pee in the forest... be careful and make sure to do a body check afterwards. In general, it is better to stay on clear paths rather than venture into really grassy areas, because that is where ticks live.
Treatment/Cure: There is no guarantee one can be "cured" from Lyme disease, most people suffer through this disease for the rest of their lives. However, there are ways to care for/treat Lyme disease. One can remove the tick upon immediate contact and limit the amount of disease injected into their bodies. One can also be treated to a certain extent by antibiotics. At some point, if not addressed, the Lyme disease can get to a point where it is not possible to be treated.