Refuse to Fall
There comes a point in our lives when we have to stand up to sin. Sin, both great and small, has the ability to divert us away from the path that we wish to follow. We're only overcome by sin when we consent to it, and so we must summon the courage to say no more.
Use the Sacraments of Reconciliation and the Eucharist to gain the graces you need for battle. Fortify yourself through prayer and good works daily. Suit up and fight when temptation confronts you. Avoid directly causing temptation and track your victories.
Sin depends on your complicity. Don't give it the time of day.