Walking - did I overdo it?

I walked a lot today... From the house to the Hanbleceya center, and back... To the store and back... To the lake and back... And then to the store again and back. And I feel great!! But I feel like maybe I over did it, and that maybe I'm not thinking of exercise in the healthiest way.

My thought process is "wow I've burned a lot of calories maybe my weight will go down"

Not the healthiest way of thinking.

I want to be able to walk and ENJOY myself instead of thinking about burning calories. I don't want food to take up so much space in my mind. It's always there... What have I eaten, how many calories were in it, how much have is burned off, why don't my clothes fit the same way.... And it's constant. All day I'm consumed by these thoughts. I hate it.

And even worse - probably the thoughts I hate the most - are the comparing to others bodies. We have a new staff member and she is TINY. She looks like a little girl, and she eats normally. Part of me is so flipping jealous that she can eat and look that way. For me I have to starve to look like that, and when I do look like that I'm usually in the hospital :( 

I want my thoughts to change. I want to be recovered, not just half way but fully. I want to walk because it's enjoyable and be ok with my body. I want to be free.