The body and mind are dependent.

Those who grumble at the little thing that has fallen to their lot to do will grumble at everything. Always grumbling, they will lead a miserable life, and everything will be a failure. But those who do their duties as they go, putting their shoulders to the wheel, will see the light, and higher duties will fall to their share.

The secret of karma yoga which is to perform actions without any fruitive desires is taught by Lord Krishna in the Bhagavad-Gita.

Hold to the idea, "I am not the mind, I see that I am thinking, I am watching my mind act," and each day the identification of yourself with thoughts and feelings will grow less, until at last you can entirely separate yourself from the mind and actually know it to be apart from yourself.

They aimless halt, who halt for others.

This world is not for cowards.

In the world take always the position of the giver. Give everything and look for no return. Give love, give help, give service, give any little thing you can, but keep out barter. Make no conditions and none will be imposed on you. Let us give out of our own bounty, just as God gives to us.