The Scrum Master day is never twice the same. As the guardian of the Team and Scrum spirit, the Scrum Master will experience all ups and downs of the group, its members, and developed products.
While success and failures are shared, the Scrum Master is the key role who helps and supports the Scrum Team. They are a leader who promotes a safe environment for growth and accelerated learning. Of course, a well-functioning team will need much less coaching in agile values and principles from a Scrum Master than a new team.