Hello Heeree: I noticed this is your first post here on PC. So... welcome to PsychCentral.

Here are links to 7 articles, from PsychCentral's archives, that address your concern better & more fully than I would be able to. The first 2 articles (as well as the 6th) are by our host Dr. John Grohol, Psy.D.:

You Can Only Change Yourself

Denial is a Powerful Impediment to Treatment

11 Ways to Help a Loved One in Denial

How to Persuade Your Loved One to Seek Professional Help

10 Ways to Help Someone Who's Depressed

https://psychcentral.com/blog/6-thin...hos-depressed/

https://psychcentral.com/lib/worst-t...hos-depressed/

I hope you find PC to be of benefit.