Prudence and folly.
v.8 Consider your ways. The wisdom of the prudent is to carefully consider their ways (their path); but the folly of fools is to deceive themselves (and others).
v.9 Making amends. Fools ridicule the idea of making amends (for wrongs), while the upright show goodwill (and enjoy God’s favor).
v.10 Emotions are personal. The deepest emotional feelings of bitterness and joy can only be understood by the person with those feelings. Only God knows what is in the heart (15:11; Jer 17:10; 1 Sm 16:7). Don’t evaluate others based on outward appearance.
v.11 Prosperity. The house of the wicked will be destroyed; while the upright (those with wisdom and integrity) prosper. See 12:7.
v.12 The way of death. There is a way that seems right to a man but that ends in death. The ways of the world (evil) are deceptive. They may promise the good life, but in the end cannot deliver. See 12:15, 16:25, and Mt 7:13-14. The wise will constantly reevaluate their life path.
v.13 A grain of salt. Even in apparent joy the heart may ache inside. Take what you see in external appearance with a grain of salt. What seems joyful today may end in grief tomorrow.
v.14 Rewards for deeds. Both the backslider in heart and the good man will be filled with the fruit of his ways.
v.15 Discernment. The simple (fool) believes anything, but the prudent (wise) gives it careful consideration. See 9:6.
These proverbs remind us of the need to think critically and be careful to be on the right path (of wisdom). Remember that appearances can deceive.