Proverbs 21:4-8

Sins of a proud heart.
v.4 A proud heart. A proud heart is the lamp that guides the wicked. Haughty eyes (arrogant eyes that look down on others) and a proud heart are sin. The Lord hates pride. See 6:16-19.
v.5 Plans of the diligent. The plans of the diligent lead to an abundance (prosperity), but he who is hasty (and perhaps takes shortcuts) comes to poverty (28:22).
v.6 Snare of death. Getting riches with a lying tongue is a vanishing mist and a snare of death. See similar thought in 13:11. Ill gotten gain will quickly disappear into thin air. Instead of the fortune they were looking for they find meaninglessness and death.
v.7 Violence. The wicked will be swept away by their own violence, because they don't act with justice. Innocent people are hurt by their violence, but they themselves will meet with a tragic end.
v.8 The crooked way. The guilty travel on the crooked (devious) way, but the way of the innocent is straight (pure). Character and deeds (way) tend to match.

Read Proverbs 21:4-8