“[…] The Lord is faithful, and he will strengthen you and protect you from the wicked one.”
~2 Thessalonians 3:3

It would be a mistake on my part to think I could be strong enough to make good choices without God’s guidance.
While everyone benefits from an innate conscience, gone unchecked that very conscience could end up justifying immoral or selfish behavior. (Rom. 2:14,15; Tit. 1:15)
And while I could live a fairly decent life solely based on the values my parents taught me, parents are imperfect and that approach would most certainly doom me to repeat their mistakes. (Pr. 22:6; Rom. 3:23; Eph. 6:4)
On top of this, God’s word explains that one’s personal struggle against Satanic influences is very real. (Eph. 2:2; 6:11,12; 1 John 5:19)
Knowing all this, modesty ought to move me to seek out God’s guidance through prayer and through reading the Scriptures, as well as by staying close to the congregation. (2 Thes. 3:5; Heb. 4:12)
Only then can I truly benefit from ‘protection from the wicked one.’ (Ps. 37:28)