Spend some time learning about masculinity, gender inequality, and the root causes of gender violence and challenge yourself to think about your own ideas and attitudes. The Resources page has some ideas for self education.
Although most men will never be violent, we all need to examine ways we might try to control women. Do we dominate conversations? Do we put them down? Do we limit their activities?
At least one in three women is beaten, coerced into sex or otherwise abused by an intimate partner in the course of her lifetime.