Psalm 37:7 Rest in the Lord, and wait patiently for Him; do not fret because of him who prospers in his way, because of the man who brings wicked schemes to pass.
It is sometimes hard to watch other people being prosperous and knowing that they are working against God.
But then when you see them striving for things which you know will not last you begin to feel sorry for them as well.
We should be an example to others showing them how much comfort and peace we get from serving God even if we are not prosperous in worldly terms.
Rest in God and enjoy His comfort which will last for eternity.