A verse repeated twice in the Proverbs due to its important says, "There is a way that seems right to a man, but its end is the way of death." (Prov 14: 12; 16: 25) It probably means that a person should not rely on his own view and understanding of matters, for he may be wrong or think a certain way good, while it is harmful. Therefore, "Lean not on your own understanding" (Prov 3: 5), nor lay your whole trust on your own thoughts and trends, nor fulfill all your desires, for though they may seem sound, they turn to your trouble.
The Scripture further blames a person who is wise in his own eyes and follows his own thoughts, saying, "Do you see a man wise in his own eyes? There is more hope for a fool than for him." (Prov 26:12)