Jeunesse de coeur

 Willingness also is important in order to retain youthful- ness. When you like someone, you don't mind cooking or do- ing other forms of service for that person; but if you have to do it for someone you don't like, your unwillingness makes you tired and irritable to do anything for him. This same principle is applicable in every situation: If you are unwilling, then you have no energy or interest. If you are willing, you have the vitality and enthusiasm of youthfulness.

Another key to mental youthfulness is to learn to be less selfish and self-centered, and more giving and caring toward others. To hold on to the joy found in contact with God in meditation, you must practice His quality of loving all, of being just and kind to all. Forgive your enemies. What a wonderful release you will have from the bondage of anger and jealousy. Reach out to help others every day, in whatever way you can and especially by bringing souls to the spiritual path to seek God. Give to all that same love with which you love your family and dear ones. God gives you loved ones that you might learn to expand self-love to include love for others. And He allows death and other circumstances to take away dear ones that you do not confine your love to only a few, but learn to give it to all. The more universal your love becomes, the more your expanded consciousness will be filled with the joy of His omnipresent Being

 Sri Paramahansa Yogananda.
Journey To Self-realization. P.9-10.