Every Sunday an organist has to go to church, sit down on the organ bench and play something - a few hymns, choral accompaniments, or even real organ compositions or improvisations during church service. Other musicians, such as pianists don't have this opportunity to play in public regularly, this is unique for organists. I don't know of many other professions who have built-in possibilities for public performance.
This might be stressful at times, but every Sunday you show up and play something. You could treat this as a burden but you could also view it as a unique and privileged situation for you to grow as an organist and as a musician in general about which I talk in this video.