Working out is going to be your best bet! I have my own personal treadmill and have found I am not as lazy with the convenience of having my own treadmill in the next room. I would always use the excuse of not wanting to pay for a gym pass, or when I would give in and buy one, not wanting to make the drive there. Drive there and back, just no time for that! ha Having one in my house, I will now jump on whenever I have just 15 mins or so, doing this a couple times a day really begins to add up! If you think that could be help you, I got mine off nordictrackcoupons.com for pretty cheap, if you are interested!
Also try doing more engaging workouts, if boredom is your problem. Try boxing, sports with your friends or something that will keep your attention and make the workout fun! If you enjoy it, you'll want to do it more!
Hope this helps! Good luck to ya!