When we act it is from conscious choices.  Reacting comes from unconscious choices.  Do you more often react or act?  

Matthew 8:18 KJV
Matthew 22:36 KJV
Revelation 2:4-5 KJV
Deuteronomy 6:13-14 KJV
Matthew 18:3 KJV
1 Chronicles 11:6 KJV