Who is a true doer of the Divine work?

If you want to be a true doer of divine works, your first aim must be to be totally free from all desire and self-regarding ego. All your life must be an offering and a sacrifice to the Supreme; your only object in action shall be to serve, to receive, to fulfil, to become a manifesting instrument of the Divine Shakti in her works. You must grow in the divine consciousness till there is no difference between your will and hers, no motive except her impulsion in you, no action that is not her conscious action in you and through you.

Ref: The Mother with Letters on The Mother