Keep the commandments of God. If you have sinned, the sooner you begin to make your way back, the sooner you will find the sweet peace and joy that come with the miracle of forgiveness. Happiness comes from living the way the Lord wants you to live and from service to God and others.
Do not think only of your own joy, but vow to save all beings from suffering. This is sharing in its highest form and purity beyond all poisons of this world.
When doubts haunt me, when disappointments stare me in the face, and I see not one ray of hope on the horizon, I turn to Bhagavad-gita and find a verse to comfort me; and I immediately begin to smile in the midst of overwhelming sorrow. Those who meditate on the Gita will derive fresh joy and new meanings from it every day.
Renunciation made for the sake of service is an ineffable joy of which none can deprive anyone, because that nectar springs from within and sustains life.
There is little that separates humans from other sentient beings - we all feel joy, we all deeply crave to be alive and to live freely, and we all share this planet together.