The Bible tells us,
"Fret not thyself because of evildoers, neither be thou envious against the workers of iniquity".
Let's talk about this scripture for a second. We have all been to a point where we have gotten upset because we felt like the wicked was being blessed.
We felt like they was prospering in life. Understand something, the wicked one is not prospering in life, even though it seems like it, because the Bible tells us what they gain in this life, their riches, it won't last long. But in the same chapter, the Lord said, delight thyself also in the Lord, and he shall give thee the desires of thine heart.
Just because it looked like the wicked is prospering, that don't mean it's always from God. So never become envious or jealous, because there are some people that have to do some dark demonic things to receive their riches.
Remember something, what God blesses, it comes with no sorrow. So be content because you are sons and daughters of God, and he will never allow you to go without. He will never let you lack.