God's peace is something that every born-again believer has. It's a fruit of the Spirit. That peace is always umpiring; we just don't always pay attention.
How many times have we acted contrary to the peace in our heart and afterwards, wished we hadn't? Then we say, "I never did feel good about that." That was the peace of God umpiring, but we chose to play by our own rules.
There are some things we can do to help the peace of God umpiring in our hearts. First, consider ALL the options. Many wrong decisions have been made because not all the options were considered. Don't let fear rule out God's possibilities. Next, we use our imagination to explore what will happen with each choice. Think it through. We should be able to discern a greater peace as we consider the option the Lord would have us take. That is not to say that there will be total peace with any of the choices. In the spirit there will be total peace over the right choice, but we aren't always totally in the Spirit and it is not unusual for some turmoil to exist. Just as an umpire has to make a call, be bold enough to follow the direction that gives the most peace.
The rudder on a ship can't go any direction until the ship is moving. The ship doesn't have to be going full steam ahead for the rudder to work, but it does have to be moving. We have to act before the peace of God will give us perfect direction.
Even if a mistake is made, we will have made it in faith, trying to follow the peace of God in our heart. The Lord can bless a wrong decision made in faith from a pure heart, more than He can bless indecision, Romans 14:23.