"A lie has speed, but truth has endurance."
~ Edgar J Mohn ~
And yet, honesty, by its very nature, has to be relative, because it filters through us, and so we can't fully separate ourselves from it. What's honest from one person's perspective is denial from another.
So all we can do- perhaps the truest truth there is- is to be as honest with the reality of our situation as we can be at any given time, and leave, trust, and recommend others to do the same.
From day to day and minute to minute, I appraise myself as honestly and accurately as I possibly can.