Yea. Even the shrinks know that walking is a better cure for depression than antidepressants. It's the first thing any shrink will tell you to do.
Trouble is, depressed people often don't feel like walking.
Force yourself to walk, but if the idea really sucks to you, and makes you miserable thinking about it, try to put a (fake if necessary) smile on face and start counting your blessings - finding things to be grateful about, instead of focusing on the fact that you don't want to take a walk.
I try to notice things while walking -- birds, what the road construction crews are working on, what is making a particular noise, children, trees. This gets me out of my head and away from my troubles, and also prevents me from getting too bored while walking.
Walking daily increases health and happiness, and helps a person to sleep better.
When i'm feeling stresssed, irritable, or so sad i want to die, i just drop everything and go for a walk! It's okay to stop thinking about everything all at once! I don't even think about where i'm walking to, i just go. Taking deep breaths along the way and just enjoying the control is the best way to go. I used to suffer from anxiety and bi-polar disorder, but walking, healthy eating, and love for myself and everyone else have cured it!"