[Mogqua]

"Step Zero" Is not actually a step but a realization that we ought to to taking a step.
Some call it their "bottom" or "moment of clarity".

In "As Bill Sees It" it says that "time and time again, we will find ourself at this unflattering point of departure" (approximate quote).
I see this as a call to all things that become obstacles in my affairs.
And that these actions (or steps) will lead to a solution or a place to find a solution.

To quote the "Big Book" as to what "Step Zero" is, in my opinion, it would be this:

We stood at the turning point. we asked His protection and care with complete abandon.

And interestingly enough, the first direction to me is written after the Steps.

It is:

Do not be discouraged.

Something I must remind myself daily.