# 100 Percent of the Time Is Easier Than 98 Percent of the Time Many of us have convinced ourselves that we are able to break our own personal rules “just this once.” In our minds, we can justify these small choices. None of those things, when they first happen, feels like a life-changing decision. The marginal costs are almost always low. But each of those decisions can roll up into a much bigger picture, turning you into the kind of person you never wanted to be. That instinct to just use the marginal costs hides from us the true cost of our actions.