Psychology can be helpful in business leadership in a number of ways. For example, understanding psychological principles can help a leader to:

1. Communicate more effectively with employees and colleagues
2. Motivate and inspire others
3. Build and maintain positive relationships within the organization
4. Create a positive work environment
5. Make better decisions
6. Understand and manage their own emotions and reactions to situations
7. Understand and manage the emotions and reactions of others

By gaining an understanding of psychological concepts, a leader can be better equipped to lead their team effectively and create a successful and productive organization.