Setting a personal goal, and working towards it, gives you a feeling of accomplishment. Check out my progress on my 1200 km walking goal.
If you're disgusted at your own body, you are basically hating yourself on a daily basis. Learn how living in the present could give you greater peace, less stress and ultimately, a better relationship with your body.
Walking is an easy way to exercise. It's YOU time that can be your own personal retreat.