Pastoral burnout is a difficult issue to address – partially because it combines the hard data of how many pastors leave the vocation on a regular basis with the “soft data” (is that a thing?) with issues less easy to measure, like feelings and encouragement and relationship dynamics. I appreciated the recent Mortification of Spin podcast and would recommend it to your listening.
I’d like to add one thought to this discussion, something based on my own experience. (This was long enough ago that I think I can share it without offending anyone or causing any of my church family to fear for my current sanity.) Several years ago I went through a period characterized by loneliness and discouragement.