I believe that a plan is important,but not to become obsessed with such.
Clearly you want sobriety but see plans perhaps as somewhat neurotic.
My plan involves ongoing awareness of alcohols horrible down side.
As any benefits are all but negligible this isn't too difficult
.A.A speaks of analysis paralysis where drinkers desperately try to justify their drinking.
This is perhaps the reverse side of the coin. an obsession with justification.
Life will throw all kinds of things at us conducive to drinking.
A simple,plan, not so complex as to annoy, but still adequate seems helpful.