A great way to improve your results during a singles point (once you get past the serve) is to follow this idea: draw a circle five feet in all directions from the "T" (where the center service line and the service line meet) and you will define the "circle of death".
Every tennis player is different. Some of us are Type A and some of us are laid back and just willing to take it as it comes. The best tennis players are able to find the right combination of consistency and aggressiveness.
Time for one of the most basic technique tips that everyone can use. The groundstroke follow through is more important than you think-it helps keep the path of the swing consistent and allows your racquet to gain momentum through the point of contact.