Hi Debbie,
It is all about creating a new habit, and it takes about 3 weeks to achieve that. At the begining you need to make some effort, I think about how great I feel after I workout and take a hot shower, because I feel fantastic. I feel proud that I did something for me, I feel ready to go to work and face any challenge that life would bring. I feel full of energy. With time just like building strentgh you will miss the day you can't workout. I like the Nike slogan " Just Do It", I don't give myself time to think about, I get up, go the bathroom, get my workout clothes and shoes, get my water and it is playtime.
You may also want to visualize how fabulous you are going to look if you keep that up.