Martha Graham's advice to fellow dancer Agnes de Mille:
There is a vitality, a life force, an energy, a quickening that is translated through you into action, and because there's only one of you, in all of time, this expression is unique.
If you block it, it will never exist through any other medium, and it will be lost. The world will not have it.
It is not your business to determine how good it is nor how valuable it is, or how valuable it is compared with other expressions.
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Source:
Acting with Asha - Shaun Benson from The Boys and Tiny Pretty Things- Part 2