Your job as a manager is to delegate effectively. Without delegation you are not leveraging the human capital at your disposal and reducing the opportunity to focus on higher impact activities.
Your other job is to teach your team to think and produce autonomously. The quickest route to ruin as a new manager is trying to solve all your team's problems. You know you are doing this when you have the most action-items coming from your team meetings.
Your final job as a manger is to spark debate and act as a final decision maker when conflict arises. This is not to be confused with preventing conflict and healthy debate, but to spark it, moderate it, and leverage it. The outcome is meetings that are never boring, always engaging, and results in buy-on on the decisions made.
Managing when done right is rewarding. But if not done well can be torture.