Bipolar Disorder Support Group
Bipolar disorder is not just a single disorder, but a category of mood disorders marked by periods of abnormally high energy and euphoria, often accompanied by bouts of clinical depression. This is the place to talk about your experience with bipolar disorder, learn from others' experiences, and find support.

BPD means Borderline Personality Disorder which is covered on the Personality Disorder board.
If you mean Bipolar, then depression is half of it rather than something separate.
To make it better you need to talk to your psychiatrist - bipolar needs treatment by medication and if that isn't working then you will need a med adjustment