Meditation is an act of controlling your mind. Whatever you've heard, the objective of meditation is 100% absolute focus. What you focus on is up to you and the form of meditation you are practicing. A few of the options are:
1. your breathing--nothing more and nothing less
2. a mantra, saying or affirmation
3. an ideal such as love or gratitude
4. a problem, such as how you are consumed with desire or suffering
5. a quiet mind (opinions on what this is vary)
6. swaying or some other form of rhythmic movement
7. a repetitive sound such as a beating drum, heart, etc.