If you keep at it, one day something which at first appeared impossible will become merely something very difficult indeed.

Fall with awareness and acceptance.

In Karma-yoga no effort is ever lost, and there is no harm. Even a little practice of this discipline protects one from great fear [of birth and death].

The state of severance of union with sorrow is known by the name of yoga.

Yoga is difficult for the one whose mind is not subdued.

Karma-yoga is a supreme secret indeed.