The key is not so much what you focus on but how you do it. What is more important is the quality of the awareness you bring to each moment. That awareness should be meditative in the sense of being a silent witness, accepting and nonjudgmental. It, however, does not imply resignation to abuse or injustice. There are two kinds of mindful meditation - formal and informal.
Yoga is a good example of the formal type.
In a yoga class, participants focus intently on their breathing and the postures , moving slowly from one position to the next, exquisitely aware of their feelings during the process. Practitioners are taught to concentrate on their breathing and its passage through the body as they dismiss any distracting thoughts. Though it sounds simple, mindfulness takes practice, and the longer you practice, the easier the process becomes. Tai chi offers a similar dimension of mindfulness. Informal mindfulness involves turning the headlong rush of daily living into a collection of discrete moments of experience, each savored fully.