How do we know if we are thinking the right thing?

We cannot control the fact that we think.  Thinking is very much a normal part of the functioning of our being.  However, we can control what thoughts that we entertain and dwell upon.  We also have the power to reject thoughts and take authority over them and cast them out of our minds.  But how can we tell if we are thinking or mediating on the right thing.  It says in Isaiah 26:3 (NKJV) "3 You will keep him in perfect peace, Whose mind is stayed on You, Because he trusts in You."  So when we fix our mind on the thoughts that originate on the impulses of the Holy Spirit, the ultimate result of that thinking will be the peace of God.  So if we want to test if our thinking is right or not, we ask ourselves if it's producing the peace of God in our life.