
The amazing part of it is that there isn't anything specific to warrant such an emotion, except finding a gentle rest in the God of all comfort. It wasn't until today when I was meditating on a sermon on Repentance that I realized really where the Happiness is coming from.
This summer I went through a season of true wrestling with God. I was shocked to reveal some of my deepest sins. The biggest sin that I struggled with (and continue to struggle with) is truly trusting & believing in the goodness of God. The part of repetance that I had to melt into is the fact that God will never be able to fully show me "why" I need to trust Him, (not that He COULDN'T do it, more of the fact that it wouldn't glorify Him to show me) but I need to honor Him by following in obedience - by trusting Him in obedience.
"What does this have to do with happiness" you ask?
On August 10 2008, God began to challenge me with trusting Him - completely. He has been telling me "wait" over & over again. He is reminding me through scripture to wait, to believe, to trust.
Wait

Believe
--Numbers 14 - If you do not believe you will not enter the promised land.
Trust
From scripture to other miraculous signs, He is showing me the way. This is how I know I am happy. I can rest in His truth, and wait for His grace and look forward to how "He is going to going to do something in [my] days that [I] would not believe, even if [I was] told."
Praise God for His goodness. May you find His joy in the trials of life.