Little mini-challenge for you: Try an Interval Walk or two this week (or adapt it whatever your cardio preference is). Exercise as fast as your can for just 30 seconds, followed by 1 minute at a steady, recovery pace, then repeat as many times as time permits. This type of "interval workout" intensifies your workout, so you don't have dedicate that much of your day to working out, but you still get the same benefits (if not more, because HITT workouts are a excellent addition to your workout regimen).
When you're having a good time exercising, it blocks out the unpleasant feelings that can be associated with the term "working out." If you do a heart-pumping activity "that makes you smile," you'll be more likely to stick with it. If you see exercise as an enjoyable part of life, you'll do more of it . . . and get more feel-good benefits from it. Find your passion!