Walking is great for you. It gets the body moving, it gets you off the couch, and it makes you feel good about yourself. It doesn’t need to be a long walk, just a 10 minute walk will do.
If an improvement in mood and happiness isn’t enough, think about the other physical benefits to getting the body moving. You burn calories, work your muscles, give your heart a bit of a workout which is always good. What do you have to lose by treating yourself to a walk?