What a great verse! And it can the mantra of life -- don't be overcome by evil. Overcome evil with good.
What's evil? Anything anti-God, anything that takes us out of God's peace, anything that isn't bringing us closer to God.
"Those who desire to make a good showing the flesh" Galatians 6:12a
If we're trying to do this, then we are doing something anti-God.
"For all that is in the world, the lust of the flesh, and the lust of the eyes and the boastful pride of life, is not from the Father, but is from the world." 1 John 2:16
And the list of flesh deeds from Galatians 5:19-21 fall under that evil category too. Here they are:
"immorality, impurity, sensuality, idolatry, sorcery, enmities, strife, jealousy, outbursts of anger, disputes, dissensions, factions, envying, drunkenness, carrousing, and things like these"
How to overcome evil with good? Use the fruit of the Spirit -- love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control (found also in Galatians 5).