Proverbs 24:19-20

19Do not fret because of evildoers,
Nor be envious of the wicked;
20For there will be no prospect for the evil man;
The lamp of the wicked will be put out.
-Proverbs 24:19-20

The wicked will have what's coming to them, and that is a fact. We should not lose heart as they prosper in this life. This, in the scope of eternity, is a blink of the eye, a passing of the wind. For all the effort that the wicked put into gaining in this life, it will amount to nothing for eternal measures. So do not envy them and do not fret because of them. Let your satisfaction and peace come from the fact that the work of the believer will be eternally rewarded. Consider what Paul says in 1 Corinthians 15,

"58 Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord."
-1 Cor 15:58

While the wicked work in vain, we work for eternal glory. Work unto the Lord and let Him be your peace.