Exercise to lose weight

This is the message I am trying to send to myself.
Since I started "Total Motivation" at "6weeks2buff", I've lost no weight. It's been a week since I started keeping a food diary.
According to the calorie calculator, I could have 1,800 a day.
Without trying very hard, I eat about 1,200. Which is about right for wanting to lose weight.
So what's the problem?
Yesterday I went up to the mailbox twice.
Got 1 wheelbarrow of dirt for the driveway.
Today, I went up to the top of the hill through the woods. A good walk/hike.
Even my baggy pants are tight. So depressing.
My right shoulder and left knee have been bothering me horribly.
I added some yoga stretches to my day for that.
One, I use a wash cloth to reach behind my back to stretch my shoulder/arms. Eventually, I should not need the washrag as a crutch - my hands should meet.
This morning my left hip was totally whacked. Thus the hike up the hill.
Fuck this not feeling limber and energetic.
However, it just goes to show, don't take care of the body as a temple and it goes to hell. That is not going to happen in my life.
Like Dr. Phil would say, "How's that working out for you?"
Well, I keep hanging in there. I'm still doing this. I started this blog last October? I''ve gotten nowhere?