Productivity?

What I'm realizing is that I don't know how to gauge my own productivity in this new job, because I'm working from home.

I know that I'm getting some things done each day, but I don't know if it's enough. And that drives me NUTS. Absolutely crazy. I'm constantly down on myself for not getting enough work done each day, but the truth is, I don't have a lot of work to do! Until I'm out there in the field, I don't have a ton of stuff to do.

And the truth is that I do take breaks. I don't lounge around and watch TV, but I do other things. Like surf the internet or take a long lunch to go to a meeting or leave early to get a massage. I can't seem to figure out how much work is enough for one day. And it's making me feel guilty about the nice things that I do for myself. I'm very uncomfortable!