Psychoeducation is an important part of treating bipolar disorder. Understanding protective and risk factors will help your clients avoid manic and depressive episodes as much as is possible, and it will help them seek help when they're unavoidable. Knowledge about bipolar disorder can also help them understand the importance of medication, and the value of psychotherapy.
In addition to your clients, their families also have a lot to gain by learning about the disorder. Psychoeducation for families can help to improve their understanding, and their ability to support their loved one through the diagnosis. With practice, they'll even learn to spot the swings of depression and mania, which can become an invaluable treatment tool.