My father has told me how he got through this predicament. He was approached by my mother's father (a preacher) and they discussed his thoughts. Basically the idea is that you are best off believing in God because, mathematically, it made sense. Choosing to believe but being wrong, you live a content life, but lose in the end. You don't believe, and are right, you live in fear of death, and then there's nothing; still a loss. You can believe but be wrong; you live your life content with death, not fearing it, and when you die you don't know you are wrong, so you "win". Believe, and be right, obvious win. So, "mathematically" it makes more sense to believe.

However, the problem I have is with living your life at all. If you believe in a Christian God, then you believe that the after-life is the important one, so why should wee live our life? As Sparker said, if there is a reincarnation, then why not just kill yourself when you get bored with your life or face challenges? Just keep cycling through your lives until you find one that is worth living. However, loss of memory that led to the conclusion of suicide as being the correct answer could prove to be a problem... therefore it'd have to be an accepted view for humanity, and so it'd be taught from birth until your death.  If there is no God, then, again, why try in life? What do you gain? In the end, you won't reap any rewards. You won't know that your name lives on because of some great achievement you made. So what if you live forever by being remembered? Your consciousness still doesn't live on forever.