I am finding more and more that when I go to a customer's home for a specific project I hear, "hey, since you're here, can you help me with ..."  I truly enjoy helping people, and helping around the house with little things that have irked people, but they thought were too small to bother with, really makes me happy.  I went to a house the other day to fix a broken window.  Once I got there, I was asked to look at some cabinets where the laminate was peeling off, a ceiling that was peeling a bit, a rotten window sill, and a few other minor items.  I was able to clear up this list in very little time and my customer was thrilled to get all those little issues cleaned up.  Days like that make me feel great!