It takes work to be wise. It comes from a careful commitment to receiving God's instruction and paying attention to those situations that can make one wiser. It is important and serious business. More than just education, true wisdom is a kind of obsession. The heart must drive the life toward pursuit of what is wise.
It seems that exposure is very important. A wise person makes conscious commitments to surround himself with input that increases wisdom. It must start with scriptural intake. It can include solid knowledge of the universe around him. It must also include befriending, sitting under, and learning from other wisdom mentors who commit to doing the same.
Wisdom is an obsession that requires a diligent heart that never stops being a stellar student of life. It requires a willingness to cut some input sources in favor of solid wisdom that bears the stamp of God's authority so that maturity and growth always happens. The mudane is avoided in favor of that which has eternal inpact. Amusement is replaced by thoughtful challenges. Hobbies become practical avocations that bring joy and increase capacity for productivity and praise. Knowledge brings to realization a very fulfilling experience of power and contentment in the life of a person whose heart is applied to instruction.