With baby fussy and needing to be fed, changed, and rocked, it's very easy to forget our own needs. Heck, I even sometimes feel my body isn't my own, that my breasts are now just food-producers and not for pleasure/looks. So before we head further down that road, heads up, mamas, here's my #1 advice: Take care of YOU.
Yes, people are right when they say "sleep when the baby sleeps," and so on: perhaps that can be one way of taking care of yourself, but think of it this way: a happy mama has a happy baby (most of the time). So do what you gotta do to take care of you.
Make some time for yourself, if that means napping when baby naps, or exercising (check with your health provider when you can do so post-birth: it is usually 6 weeks), or reading a book, sitting by the window to get some Vitamin D, snuggling with your pet dog or cat, sketching, journaling...whatever it is that makes you happy, do it: set aside some time each day, and you and everyone around you will thank you.
What will you do for yourself today?