Thus far the treatment I’ve described involves psychotherapy, but not pharmacology. The question of treating bipolar depression with medication is a very complex one.
When medication is called for, I collaborate with professionals of the utmost competence. Success in using medication depends on having a good psychopharmacologist and a good therapist.
On a philosophical note, the success of medication in treating bipolar symptoms does not give cause to conclude anything about the nature of bipolar phenomena. A deeper understanding of biological psychology is necessary. Specifically, every psychological event is in some sense also a biological event. Thus, if Lithium effects your symptoms, that doesn’t mean there is nothing more to understand about your psychology–and your need to experience mania. In fact, understanding oneself is integral to having the capacity to adhere to the medication.