May We Ask God For A Sign ?

So there has been a few occasions in my walk with the Lord that I have asked for a sign for an answer or direction on a matter.
Have you ever found yourself wondering what the will of God is for you and thought to ask for a sign? Is this ok or is it bad? Should we just go and do trusting God will bless whatever we do? Or do we try to calculate every single move we make on our own?
These are a few of the questions I had when studying out this matter. And the simple answer in scripture is the following...

Proverbs 16:9 KJV
A man's heart deviseth his way: but the LORD directeth his steps.

There is more to it then just this So open up your KJB and watch this video Bible study for examples and more in the word of God.

New PO Box address for Grafted Branch Ministry is...
P.O Box 21
Linton, IN 47441