True happiness comes from following the Word of God

Psalms 119:1-2 ESV
Blessed are those whose way is blameless, who walk in the law of the Lord ! Blessed are those who keep his testimonies, who seek him with their whole heart,

Psalms 119:18 ESV
Open my eyes, that I may behold wondrous things out of your law.

Psalms 119:28-29 ESV
My soul melts away for sorrow; strengthen me according to your word! Put false ways far from me and graciously teach me your law!

Psalms 119:36-37 ESV
Incline my heart to your testimonies, and not to selfish gain! Turn my eyes from looking at worthless things; and give me life in your ways.

Perspective: His plan for me is infinitely better

Mark 8:34-38 ESV
And calling the crowd to him with his disciples, he said to them, "If anyone would come after me, let him deny himself and take up his cross and follow me.  For whoever would save his life will lose it, but whoever loses his life for my sake and the gospel's will save it.  For what does it profit a man to gain the whole world and forfeit his soul?  For what can a man give in return for his soul?  For whoever is ashamed of me and of my words in this adulterous and sinful generation, of him will the Son of Man also be ashamed when he comes in the glory of his Father with the holy angels."