Willpower and Won't Power

Willpower is an oft valued component for achieving our goals.  It is important, helpful and high impact.  However, each of us is motivated somewhat differently.  It struck me, as a dear friend mentioned the limits of willpower, that it might be beneficial to also incorporate won't power.  For instance:

• Losing weight - willpower - stick to a prescribed diet; won't power - allow the dieter to indicate that she/he won't deviate from the diet more than 2 times per week
• Increasing Exercise - willpower - implement a well-crafted exercise regimen; won't power- allow the exerciser to indicate that no more that 3 consecutive inactive days will be allowed

Pairing willpower and won't power strikes me as a way to recognize the realities of life's best intentions.  Incremental winning may result rather than giving up because of an unmet goal.