Every book on success or motivation says the same thing. You have to have goals. If you go hunting, you hold out the gun and fire it, and then say, "I sure hope that hits something"? No. Success is very unlikely. What do you do? You AIM the gun. The same is true in life. You have to aim your intent and energy. Goals are like targets that you are shooting at.
Read several of the Web pages listed in this page on motivation:
There are some wonderful stories about having goals has motivated individuals to levels of success they never expected. Sit down right now and list your OWN goals. Where are you headed? What will you be doing in five years? Ten years?