The same God that didn't answer your prayers immediately is the same God that didn't punish you for your sins immediately. He is a wise and gracious God.
Nothing has filled me with peace like spending time with God reading the Bible and applying it to my life. Because of it I love my wife, children, friends, and enemies more.
Jesus took on sadness so the promises of Revelation 21:4 could be true. He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away.”
The Christian position is not that there will be no sadness in this life. Instead the Christian position is that because or Jesus, in our darkest sadness, we have a greater hope.