people might say tomorrow never comes, but for me, tomorrow always came, and then it was today again.
the last time i quit, which was almost a dozen years ago, i set a date. this was nothing new. at that time, setting a quit date for booze and cigarettes and such was considered psychologically advantageous...if i remember correctly, the idea was one of "preparing for it".
which sounds rather ridiculous, as one can't, really.
and certainly i had set many postponing dates before.
anyway, i set that date for about three weeks away, and then woke up a couple of days later, had that clarity OMG moment, and quit well ahead of the date.
you can set a date and still quit today