I have either taught Sunday School, helped in Pioneer Girls (like girl scouts but Christ centered) or been an adult sponsor for Youth Group at my church since my kids were little. It's always tough to carve out the time to prepare, get there, work with the kids (who can be difficult). For three years I had one group of girls in Sunday school becuase no other teacher wanted them. They moved from 3rd grade to 4th and, with a hiapy sich, I'd say good-bye and wish thier new Suday School teacher well. That week the children's pastor called and asked if I'd take this group of girls again. this went on for the next two years. They were a challenge. There were a few self-centered girls who always turned the conversations back to themsevles, their gymnastics achievements, soccer goals, new clothes, vacation, etc. There were a few VERY talkative ones, another one or two who were know-it-alls. Overall there were about 13 of them. Every Sunday morning I'd dread that hour of trying to instill this month's virtue: patience, kindness, self-control. After they finished 5th grade and moved to middle school I decided I'd also move to middle school youth group - go figure. (my son is the same age so I actually get to be involved with him too)
I've found out in the last year that while these girls have gone through the last 3 years with me some of their families have gone through tough times. Parents of some of these girls have pulled me aside when they've come to get their kids from youth group (our middle school YG has 50 - 60 kids) and they've shared things about their girls, things that have happened in their family, ways I was able to impact their thoughts & opinions, truths about God that I've shared with them that made a difference, etc. Moms have told me how blessed they were when they saw that I ahve moved to YG with their girls, how they felt more secure about a youth retreat far away knowing that their girls would be bunking with me, etc. But the best was when the group of girls asked the youth leader if they could please get bunked with me - over the choice of the college girls!
So often the rewards are not immediate - but they come later. ;o)