I think you will find this is much more common than you think. I truly believe some of those folks who seem to always have it together are putting on a good show. I struggle with this I have all my life it is My Thorn in the Flesh, who know's perhaps it was Paul's also. The bible clearly shows Peter had an anger problem. Why else would he have drawn his sword and cut off the ear of the Roman Centurion at the Garden of Gethsemane when Jesus was arrested after being betrayed by Judas.
My father in law is a well respected man around town dozens of friends from where he retired and the coffee shops. But I bet you many folks don;t know how he treats his wife or children at home he is mean. He is lost and refuses to go to church.
I struggle with it daily it is part of picking up my cross and carrying it sometimes I drop my cross. I have to ask God to forgive me.