Putting on the necessary NBA muscle, learning how the game is played in the big boys' league, becoming a better teammate, and being willing to work to improve every aspect of your game Obviously, injuries and being in a bad situation can put a damper on things, but there is no substitute for hard work. First, read the books. No university will come calling if you don't have the grades. Plus, you'll find something other than basketball that you really like (I found computers). Work on your physical condition. The NBA is full of athletes with great endurance. You will need to run at least 2 to 3 miles each day and spend time doing sprints as well. Also manage the steps of your school's football stadium. When I was in college basketball, we did at least 10 laps of stadium steps three times a week (one lap went up and down each walkway all around the stadium). Work on your strength – proper strength training will help you handle the abuse. you're going to start playing basketball. If you're playing inside, it's a war of pushing and shoving to get the best possible position for yourself and to take away the best possible position from your opponent. I can't tell you how many times I've injured my ribs, thighs, elbows, face, neck, chest, etc. It takes strength to withstand these blows and yet