yogyaih kamair apuryaya
karmani karyamano ’ham
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Because of insatiable material desires, I was being carried away by the waves of material nature’s laws, and thus I was engaging in different activities, struggling for existence in various forms of life.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
As long as a living entity wants to fulfill various types of material desire, he must continuously change from one body to accept another. Srila Visvanatha Cakravarti Thakura explains that as a small piece of grass falls in a river and is tossed about with different types of wood and tree branches, the living entity floats in the ocean of material existence and is dashed and tossed amidst material conditions. This is called the struggle for existence. One kind of fruitive activity causes the living being to take one form of body, and because of actions performed in that body, another body is created. One must therefore stop these material activities, and the chance to do so is given in the human form of life. Specifically, our energy to act should be engaged in the service of the Lord, for then materialistic activities will automatically stop. One must fulfill one’s desires by surrendering unto the Supreme Lord, for He knows how to fulfill them. Even though one may have material desires, one should therefore engage in the devotional service of the Lord. That will purify one’s struggle for existence.
akamah sarva-kamo va
yajeta purusam param
“A person who has broader intelligence, whether he be full of all material desire, without any material desire, or desiring liberation, must by all means worship the supreme whole, the Personality of Godhead.” (Bhag. 2.3.10)
silanam bhaktir uttama
“One should render transcendental loving service to the Supreme Lord Krsna favorably and without desire for material profit or gain through fruitive activities or philosophical speculation. That is called pure devotional service.” (Bhakti-rasamrta-sindhu 1.1.11)