Joie est mon caractere, C'est la faute a Voltaire; Misere est mon trousseau C'est la faute a Rousseau. [Joy is my character, 'Tis the fault of Voltaire; Misery is my trousseau 'Tis the fault of Rousseau.] - Gavroche
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.
If we can manage to refrain from harming others in our everyday actions and words, we can start to give more serious attention to actively doing good, and this can be a source of great joy and inner confidence. We can benefit others through our actions by being warm and generous toward them, by being charitable, and by helping those in need.
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.
If there is suffering, then it's best to accept it, because it won't go away just because you pretend it's not there. If there is joy, then it's best to accept that too, even though you're afraid it might end one day.