Those who have tried human willpower no the futility of such an approach. You may be able to resist temptation for a time, but wrong impulses and fleshly desires are like the waves at the beach. They keep coming at you relentlessly. We need the power of the Holy Spirit within. Remember what Peter said in acts when he said, have you received the Holy Spirit since you believed. So this is the time if you have not asked the Holy Spirit to come and dwell within you, This is the time to asked to be filled with the Holy Spirit.