Those who show pity and are always ready to help during times of trouble are seldom the same ones who rejoice in our joy: when others are happy they have nothing to do, they become superfluous and lose their feeling of superiority, and so they easily show their displeasure.
It's always necessary to know when a stage of one's life has ended. If you stubbornly cling to it after the need has passed, you lose the joy and meaning of the rest. And you risk being shaken to your senses by God.
Each human being has the right to seek out joy, joy being understood as something which makes one content - not necessarily that which makes others content.
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.