Life with teenagers is a blast. It’s basically the gift that keeps on giving. This summer, Brian and I decided we were going to help the big kids (16 and 14) learn some life lessons. Skills, if you will, that they will need as they face college and adulthood in the next few years. I found a few lists to use as inspiration, but as usual, we ended up flying by the seat of our pants. They did learn a few things, though. Groceries Are Expensive. We told the kids they were in charge of cooking dinner for us one night a week. They were to plan a menu, research…