Mom was right: Our girlfriends are one of the best support systems we’ll have in life. Hold on the the real ones. As my mother used to say, you’re lucky if you can count on half of one hand the true friends you have. And my mom was a pretty impressive example. Throughout the chaos of raising seven kids, the one thing she never let fall by the wayside were her girlfriends. When I was in seventh grade, my dad decided he no longer wanted to be married to our mom. Her friends showed up with food, cigarettes and a boatload of Fresca. They cleaned up, did the laundry, organized our days and over time helped our mom pick her heart up off the floor. We know deep down the value of the bonds we have with our friends. (Scientists have even documented it.) This is what women do: We support, buoy…