A recent survey performed by RHR international found that:
The intensity of the CEO’s job, coupled with the scarcity of peers to confide in, creates potentially dangerous feelings of isolation among chief executives. Fifty percent of all CEOs report experiencing loneliness in the role, and of this group, 61% believe that the isolation hinders their performance. First-time CEOs are particularly susceptible to this isolation, with nearly 70% of those who experience loneliness saying it negatively affects their ability to do their jobs. Nearly half of all CEOs estimate that most other leaders experience similar feelings of loneliness.
Sharing with your peers, who understand what you are dealing with, helps relieve that sense of isolation.