Well, I never had any formal art training at all, I taught myself. Whenever I had a moment to be in front of the computer, I practiced.  Max, Rhino, Wings, Hexagon, Silo, XSI - whatever I could get my hands on. I practiced every free moment I had. It meant I had some sleepless nights but it was worth it. Same for 2d art. Every moment spent idle (riding a train or taking a bus...even lunch), was spent drawing. There's always time if you make it. Like I said, it may mean sacrificing a few hours of sleep a day but one or two hours a night less won't kill you (unless you're in the military - sleep's important for anyone who shoots as a proffession).  Just dedicate yourself to the goal and it will be done. It won't be a quick thing. It takes time to be good at anything - unless you're a prodigy of some type. 

Your first step should be deciding what you want to concentrate on. Do you want to be a modeler? If so, do you think you'd prefer modeling characters, props or environments? Down the road you'll learn to do them all but you'll want to start with one first.  Do you want to be a concept artist? Programer? etc. Ask yourself what are your interests  and then ask yourself what are your strengths. If you can find a strength to match an interest, then you're off. If not, it'll be a slightly longer ride.