The son is exhorted to stay on the paths of uprightness taught by his father.
v.10-12 The father has taught the son the way of wisdom. If he stays on that path his years of life will be lengthened.
v.13 The son is told to stay on the right path because wisdom is his life.
v.14-19 Don’t be tempted to go over to the ways of the wicked. The way of the wicked is deep darkness; but the way of the righteous is like daylight. (cf. Ps 1)
Wisdom is a lifelong endeavor of being diligent to stay on the right path. The reward being life itself. You must actively avoid the way of the wicked in order to stay on the straight path.