Aren't you grateful that others cannot know what you are thinking every minute of every day?  It is good that God created blocks in communication.  Sometimes we need a lot of time to think before we open our mouths and share our opinions.
 
God knows what we are thinking all the time.  There is no way to get around that, although I'm sure you would like to think you could.  He knows it all.  You can't keep a secret from God.  Sometimes God knows what we are thinking better than we do.
 
Luke 5 contains the exciting story of Jesus healing a paralyzed man whom his friends dropped down through the ceiling tiles.  It’s a great children's story.  Imagine the thought, Jesus was teaching crowds of people when all of the sudden the roof starts to break open.  Was it an act of God?  No, there were some crazy men up there dropping their paralyzed friend right in front of Jesus. 
 
Try to imagine what you might be thinking at a moment like this.  Would you be angry that some crazy people were interrupting the moment you were fortunate enough to get their early to see?  Would you be thinking, Wow we've got Jesus on the spot; can He heal unexpected requests? 
 
I'm not sure how long people had to think because Jesus quickly responded to this interruption with this statement, Your sins are forgiven (Luke 5:20).  I'm not sure what the Pharisees had been thinking up until that point, but at the moment Jesus told the man his sins were forgiven, their little brains started spinning.  They weren't outspoken enough to make their objections known, so Jesus exposed their thoughts.  Knowing what they were thinking, Jesus answered them by saying, Which is easier:  to say Your sins are forgiven, or to say Get up and walk?  Jesus knew the answer to His question.  Telling this man to get up and walk was easy for God's Son.  Forgiving this man's sins meant dying on a cross. 
 
Luke 5:22 says, Jesus knew what they were thinking and asked, ‘Why are you thinking these things in your hearts?’  Jesus knows what you are thinking today too.  He asks the same question of you.  Why are you thinking these things in your hearts?  Why are you thinking, I don’t have a major ministry, so I don’t matter much in God's kingdom work, or I didn’t get the job I wanted so God doesn't want to bless me with a job, or It’s okay that I am gossiping with my neighbor because we are going to pray for these people too, or Life is just too hard. 
 
Perhaps you need to take some time today to confront what you are thinking with God's truth.