The way I see it -- be a good nurse but don't let it be your life
Leave work at work. On your commute home, reflect on your day as a way of release. When you get home, do the things you like, love, and have to do and make sure you leave plenty of hours to get your rest and sleep. On your days off, live it up even more! Go on a trip, do something spontaneous, buy something you've always wanted (I do this rarely... retail therapy's not the best kind but oh does it work wonders!), or just spend some quality time with your family.
I love being a nurse, even though I've only been one for about 2 years. Nursing is a big part of me, but it's not all that I am. I make it a priority to remember that always.