Actually, if we're being HONEST - it is the ONLY policy if you are truly serious about changing your eating habits and making soid strides towards your goals of a healthier body and smaller pants size.
Your clothing is tight. The reflection in the mirror isn't one you recognize. Your child makes a comment about your belly. Whatever the impetus, we have all hit our personal wall in our lives and made the vow to course correct.
THAT. IS. THE. FIRST. STEP.
The very next one, however, is acknowledging there is no magic bullet, potion, miracle pill, or completely easy way to shed the pounds that are weighing down your every step, and weighing heavily on your heart and psyche.
When you commit, you have to COMMIT. 100%.
Not, "98% and I can cheat regularly."
Not, "Oh, there's leftover Easter candy, nom, nom, nom, I can get back on the horse next week."
Not, "Oh, I am traveling and cannot possibly stick to my new eating habits."
Not, "I am meeting friends for dinner so I have to eat like they do."
Not, "My spouse doesn't support my new goals and food choices so I'll make him/her happy with this plate of cheese and grease tonight." (Note - if your spouse is not supportive? Screw 'em. This is about YOU. YOUR choice to make a change.)
If you are in it, you have to be in it completely.
And if you cheat, you simply cannot expect the scale to reflect anything but the cheating.
If you have indulged in mini Easter candy bars, a dinner out where the food underneath is indistinguishable because of the layer of cheese on top, if your food is greasy enough to lube your car, or you continue to pay zero attention to the contents of what you eat (sorry, but if you are still packing in the processed, the scale is not going to move the way you want it to) - there is NO rationalizing what you see when you weigh in.
There is no one to blame but the person staring back at you from the mirror.
Dieting is not fun in the beginning. It requires you analyze why you got where you are, and take big steps to change your habits. And if your habit has long been rewarding yourself, consoling yourself, or comforting yourself with food, the changes will be agony.
IN THE BEGINNING.
And in the right direction.