To lose weight, eat less and exercise more.  Often, when I start a new exercise routine though, I get bored with it and end up quitting.  It's best to choose exercise that you enjoy doing to avoid giving up.  There are many ways to get exercise that can be fun, essential or combine work and play.  The whole idea here is to get moving and keep moving.  Adding exercise to your day can be fun and rewarding if you find exercise that  you enjoy doing.