Problem.... Cosmic radiation. You might leave for the mars but you would never make it. In order to protect you from the bambardment of CR your ship would have to be several feet thick of lead. Lead is still a bit heavy as far as I know. Hard to get it into space with that kinda weight.
Start by getting at least a Masters Degree in one of the following: engineering physics, astro-physics, geology, astro-biology, or any number of engineering degrees. It might help if you had some aviation and aerospace sciences disciplines, but that's not necessary. In about a decade we should be ready to begin construction of the Mars launch vehicle, ship, lander and habitat which should be ready for deployment about a decade after that. Adding it up, you can expect to be on Mars in about 25-30 years. Good luck.
(Of course, you could cough up about 100 million dollars and become a space tourist, but that's a different discussion).