On Guilt

Is it just me or is any one else plauged with a general vague sense of guilt a lot of the time? Yesterday, Levi was playing with rice outside and a lot of it ended up on the grass. I've heard that rice can kill birds and I felt vaugely guilty about it, but didn't do anything. When the garbage is full I look at it and feel guilty. How can such a small family produce so much trash? We recycle cans and bottles, but still throw away a lot of stuff (much of which is junk mail). I'll notice a light on downstairs, and feel bad about it, but be too lazy to go down there to turn it off. When I really want a long shower, I feel bad about it, but take one anyway. When I see a homeless person sleeping in a doorway, I feel bad, but don't know what to do. When a car is pulled over on the freeway, I want to stop and help but I am usually past by the time I realize it. Then I feel bad for not stopping. Motherhood has only compounded this. Levi is watching Elmo right now and I feel bad for not playing with him (even though he doesn't want to play). I feel bad for not brushing him regularly (see post on The Life of Levi). I feel bad for nursing him too much. I feel guilty that he does not have a very good nap schedule.
I'm just wondering if other people feel this way. Am I crazy, or do I have very low self-esteem? I don't really think so. By the way, this sounds more negative than the reality. I'm usually a fairly happy person.