How Long Do You Wait?

The question of the day (or really the past couple of months) is how long do you wait?  When something is laid on your heart, how long do you wait before you start to question?  The reality is that sometimes God lays something on your heart to see if you'd be willing to do it but He has no intention of actually making you go through with it. Sometimes He lays something on your heart strictly to test your faith.    Sometimes He asks you to do something to teach you patience (or some other lesson).  Finally, sometimes it's just a question of God making sure that the coordination of His plans is perfect.  When do you start to wonder if what He's asked you to do is what you should be doing?
I am finding that it doesn't really matter what the reasoning is for the wait.  If you know, without a doubt that God is laying something on your heart, you have to believe that he'll take care of it.  Continue to ask God to provide you affirmations, clarity and wisdom and it'll all come together eventually.  The waiting stinks but the outcome is tremendous whenever God's hand is on something.