Our culture of 2do-lists (also: to-do-lists) tends to reward activism. In this respect, no2DO is first of all a play on words and refers to the exact opposite: there is nothing to do.
Except perhaps to become aware of a situation in all its complexity and intricacy. Then, from this state of inner silence, to act spontaneously and in harmony with this overall situation, just a little, easily and effortlessly, without any effort of the will.
There is an expression for this attitude in Eastern philosophies: Wu Wei. Non-action. The exact opposite of a 2DO list. no2DO.