Hello Ambulatory: Welcome to Psych Central. You mentioned in a reply to another thread your friend has been diagnosed as having bipolar disorder. It's just my personal non-professional opinion; but I believe most people who have bipolar disorder need to be on medication & receiving therapy. So, while what you are trying to do to support your friend is laudable, you can't substitute for the professional mental health care your friend is not receiving. And, over the long haul, trying to do so is just likely to wear you down I would suspect.

Here are links to 10 articles, from Psych Central's archives, that (hopefully) may be of some help:

Bipolar Disorder: Symptoms, Types & Treatments | Psych Central

The 4 Keys to Managing Bipolar Disorder

Helping Your Partner Manage Bipolar Disorder

8 Ways to Help Your Bipolar Loved One Cope

Bipolar Disorder: Helping Your Loved One Manage a Manic Episode

https://psychcentral.com/blog/helpin...dium=popular17

https://psychcentral.com/lib/15-ways...illness/?all=1

https://blogs.psychcentral.com/careg...ental-illness/

https://psychcentral.com/blog/9-thin...ental-illness/

https://psychcentral.com/blog/how-to...essional-help/

I hope you find PC to be of benefit.