How many times have you heard that.  Just keep the main thing the main thing!  Its always different depending on who defines it.  How about how Jesus defined the main thing.  Matthew 22:37 Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. 38 This is the first and great commandment. 39 And the second is like unto it, Thou shalt love thy neighbour as thyself