First, you’ve underestimated the power of sexual sin, and you’ve overestimated your own integrity. You thought just repenting and being sorry would be enough, and that if you really tried, you’d never want to act out again. That’s a huge underestimation of sin, not to mention an overestimation of your own strength.” My humility grew a bit that day. “Second, you failed because you had a change of heart without a change of lifestyle. And without a lifestyle change, all the ‘I’m sorrys’ in the world