half empty

Do I expect too much out of myself or not enough? I think of the question as a sort of glass half empty or half full. What brings it to mind though is how frustrated I get when someone tells me I'm being too hard on myself, expecting too much, as if he thinks so little of me. So in fact it's his expectations of me that come into question more so than my own. I know it can't be easy for him to watch me tear myself apart so voraciously, but unhealthy as it may be, that's just how I function.