Hi everyone, 

My older sister has had chronic depression for as long as I can remember. Her depression is a result of childhood trauma (i.e. she was bullied growing up by both her classmates and certain family members, had a violent father figure growing up, and a lack of love from her mother). She met this boy last year who she has been dating for some time. However, whenever she has a fight with him, she spirals out of control and her depression worsens 10x more. She loses the will to live, self harms, and attempts to end her own life (i.e. taking a whole bottle of pills) whenever they go through a rough patch or whenever they have a break up. 

I have been by her side the entire time: encouraging her, supporting her, listening to her, and trying to help her find her happiness again. She is in her late twenties and does not have a stable job yet (she did not finish college). She hasn’t gone back to college because she is unmotivated and has confided in me that she has accepted her fate (where she is in life) right now. I suggested that we see a professional together but she refuses to see a therapist or a psychologist to help her learn healthier ways of coping. 
Adding on top of that, whenever she has a relationship problem with the guy she met, she continuously fixates on the problem every single moment of the day and the longer it’s not solved, the more depressed she becomes. 

I also feel like I have become her personal therapist and it is taking a toll on my own mental health. I feel bad that I’m even feeling this way because she’s my own sister. I love my sister and I desperately want her to succeed in life. I want her to find her own happiness, but I’m at a loss at what to do next. I feel that there is only so much I can do to show her that I’m here for her, that I care for her, and that she is loved. Is there any other way I can help her more?