Psalm 119:160 (NKJV)
In the United States there are many kinds of courts and there is a court called the Supreme Court, which is the highest ranking court in the land. The job of the courts is to interpret the laws that have been made and if someone does not agree with a decision a court has made they can appeal that ruling to a higher court and if necessary go all the way to the highest court, the Supreme Court. The Supreme Court has the ability to overrule all lower court decisions. Once the Supreme Court makes a decision it is final because it is the highest ranking court.
This same principle is seen with God's Word, it is our highest authority. God's Word is the highest standard we can and should live by. The truth we find in God's Word outranks and overrules everything else. No matter what we see or hear in life God's Word has the highest rank. As Christians, as believers in Jesus Christ, we must make God's Word our highest standard. No matter what others say, no matter what others do, no matter what experiences we have had, we must always go back to find out what God's Word has to say.
To know what God says we have to know His Word, the Bible. In Psalm 119:160 it tells us that God's Word is truth, God's Word is the highest truth. We may face problems and difficulties in life but we can overrule the truth of these situations with the higher truth of God's Word. If we apply the time tested principles we find in the Bible our lives will benefit from it. If we take what God has said in His Word and we live by that then we will live a life that is superior to anything else. Read and study the Bible for yourself and no matter what comes in life allow God's Word to be your highest standard.