I am not sure if I was a difficult client. I only missed maybe two sessions in 7 years and that was due to weather and he didn't make it either. I rarely called. I never expressed anger toward him. I only really remember feeling anger toward him a few times. We never had a rupture. Sometimes I wonder if I was too "good." I just had constant suicidal thoughts. And I do think it worried him. I would say, "I think I will eventually kill myself" and he would say, "I think you might."
I don't have borderline personality disorder. I do think I was stressful to work with though because of the thoughts.

But as I said I rarely called and there was no texting or email.
Here is an article, certainly not research, but interesting nonetheless: (It may TRIGGER, PLEASE be careful)
How to Find a Therapist Who Does Not Panic | Speaking of Suicide