So you can go back in time. However, there's a catch: your consciousness as it exists now will be transplanted into your body at the age you began to form and maintain long-term memory. For some of you, that can mean returning to the age of a toddler. You won't be able to think or process things like a child; you'll still have all the memories and intelligence that you have now. You won't be undergoing the mental or emotional developments that most people go through as they age from an infant to an adult. You will still develop physically, however, so prepare for awkwardness.
Because you'll be keeping your consciousness intact, you'll be able to exploit any information you can hold in your head. The shadowy agency that's making this offer will give you exactly 24-hours to memorize anything you wish. For most people, I imagine lottery numbers and stock histories will be a priority. But anything is game. Think big. Or maybe think small, whatever.
I want to impress upon you how difficult it can and probably will be living your entire life again. It will be nearly impossible for you to connect with your peers until you reach highchool or beyond. It's almost certainly going to be long and tedious. You already know most of what's going to happen. You might be able to avert some tragedies, but more than likely, you're going to have to watch some of them unfold all over again. And relationships -- well, any serious relationship you have right now will have to start from scratch. It should go without saying that if you have a wife or husband (or any significant other), unless you met them very early in your life, you're going to be waiting a long, long time before you can reconnect with them.
But beyond all those hardships, you have an opportunity to shape the world to your will.
So what do you think? Would you do it? And what, exactly, would you do if you could?