The strength near you

When you feel tired, don’t overstrain yourself but rest – doing only your ordinary work; restlessly doing something or other all the time is not the way to cure it. To be quiet without and within is what is needed when there is this sense of fatigue. There is always a strength near you which you can call in and will remove these things, but you must learn to be quiet in order to receive it.

Ref: Letters on Yoga Vol. II