It's true we don't what we have until it's taking away from us, or until we are not in a situation where we might lose it. Second chances are a blessing from God, but even better is to live in the best possible way with the first chance we are given. Truth is, not everyone gets a second chance so gambling on that to happen for us to change is a foolish one. Of course it's a blessing when we get a second chance and can reflect and make it better than our previous selves. You and your friend are extremely fortunate, and so is everyone here who is reading this. We are here when so many who were alive yesterday are no longer here. Life is a blessing that we all take for granted so continuous reflection is the best way to appreciate it :)