They gave me a check list at the hospital before I came home and told me to make sure I do everything on the checklist EVERYDAY or else I will go into depression. I don't have it anymore, but I can tell you what I remember:
1) get at least 5 consecutive hours of sleeps (this was hard for me to do because DD was gassy and woke up every 1.5 hours to eat), but I really tried to do this and DH really help make get to this goal. Is your husband working in town or does he travel for work?
2) make sure you take a shower everyday. Also...make sure that when you wake up, to try to change out of the pj during the day and not stay in it all day long.
3) make sure you laugh a few times during the day
4) make sure you have a conversation with an adult that has nothing to do with the baby
Not sure if your husband works in town and comes home every evening or not, but when DH came home from work, I would give him 30 mins to decompress and then it's his turn to take over while I relax and not worry about the baby. Sometimes I would go to Walgreens to just get Q-tips by myself, but it just helps to get out and do something (even if that something is little).
What you're going through is completely normal and you're not alone. You have a BIG support group on this board.