Wisdom is personified again as someone who will guard you if you look for her.  But if we step out of the personification and think, it's true.  If you seek wisdom and learn the fear of the Lord, you will be able to see that certain things won't end well if you try them.  You will be guarded against people who will try to use you, because you will be able to avoid them.  You will be guarded from destruction, because you will be able to go the other way. I think that is the value of wisdom that the writer of this passage is getting at. By seeking understanding and knowing the fear of the Lord, we find the wisdom- the discretion, the perspective, the insight- that God offers us, and we can make choices that will preserve us better.

I remember a conversation with a friend in which she said "even geniuses can fall into a trap."  This is true, because intelligence and wisdom are different things. Intelligence consists of things you know.  A genius could know that people trap other people and he might now many different kinds of traps.  However, a wise person would recognize red flags that he might be getting trapped, and he could find a way out before it's too late.  I hope this makes sense.

Anyway, all of this to say, this passage showed me that wisdom is important, and if we search for it, the Lord will give it to us.