As for the work, it is a means of preparation, it can also be a means of growing into the inner consciousness. But then it must be done not as work only but as an offering to the Mother, without insisting on the ego, with an aspiration to feel her Force working in one, her Presence presiding over the work, seeking to give all to her, not claiming anything for oneself. That is the spirit of work offered as a sacrifice; done like that, work becomes a sadhana and a Yoga.
Ref: Letters on Yoga – II