I don't want work to become my life, how do I do that?

I'm interested in pursuing a career as an environmental engineer. I'm very passionate about helping the environment as well enjoy maths and sciences (can't say im great at it though...) However I want to have a family some day, and don't want work to distract me from that. What do you people think about balancing that? I don't want work to become my life.
posted by Avary on July 24, 2014