"Diagnosed with bipolar disorder 14 years ago. Meds don't work"

I am glad you've been diagnosed. But it's important to ask whether you've been switching doctors and/or therapists, as this can severely damage the treatment plan. Also, you should ask others around you about your condition rather than thinking about it yourself as this can cause severe distress while your mind is making things up. Did your doc change your meds, gave you therapy? Drugs don't work in all cases.. I suggest you to talk to your doctor about this rather than keeping it as a secret. I doubt anyone would suggest you to stop getting help as this is quite dangerous.

"Anxiety as a symptom of mania."
I do not know about this. According to the Anxiety and Depression Association of America, sometimes bipolar disorder can and often will cause anxiety if you've co-morbidity with anxiety and/or depression. Rather than viewing it as a symptom of your mood state, I suggest you to consider the illness instead. Complications over time should arise due to the severity of this disorder.

Do not try to end your life. You've been given one shot at life and you cannot commit suicide. There's no "undo" button there, and you are going to die eventually okay, the suffering will end ultimately, but to halt its progression, there are living people who very much want to treat your conditions, but for that you need to be alive.