It's Not Cool....
...To compare every musician you hear and/or know to some other musician your hear and/or know. For instance "Yeah he's good, but he ain't as good as such and such." One word...IMMATURE.
...To put crazy chords in every measure of every song you play. You don't have to play your rendition of every song your choir or praise team sing. Sometimes Amazing Grace just needs to be played like Amazing Grace. Occasionally less is more.
...For the church musician to still be asking the choir director for the key to songs that they have sung a million times.