You do not need a gym to be healthy and reach your fitness goals. First thing you need to do is find something you find enjoyable. If you do not enjoy a physical activity, chances are you will not continue to do it over time. Once you find something you like to do that requires you to move and get your heart rate up, you will continue to do it and slowly become more active in your daily life. If you have a family try to incorporate some things you can do as a family that is active. For example, "just dance" on the Wii is a fun interactive game you can do with the whole family or by yourself. Once you start doing something consistently, eventually you will get in the habit of moving more and making it a lifestyle change. You just have to start somewhere, no matter how little it is, just start!