Jesus' 2 Greatest Commandments -Simple Truths to Live By
Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.  The second is this: Love your neighbor as yourself. There is no greater commandment than these. 
Mark 12:30,31 NIV

According to Jesus, these two commandments summarize all God's laws.  God's laws are not burdensome. They can be reduced to two simple principles: love God and love others.  When you love God completely and care for others as you care for yourself, then you have fulfilled the intent of the Ten Commandments and the other Old Testament laws.

Let them rule your thoughts, decisions and actions.  When you are uncertain about what to do, ask yourself which course of action best demonstrates love for God and love for others.