I need HELP

Briana
Hello ladies! Before anything I want to let all know that I do suffer from Major Depressive Disorder which pairs well it General Anxiety, and if that's not enough add some Borderline in there and you've got Briana. Those are the official diagnoses but they way they play out in life and my relationship is not something I can joke about. At this point I'm asking for serious advice on communication bc my relationship is deteriorating and I know it is bc I'm not being the partner he needs. He is very supportive and understanding the aspects of what I deal with but you know sometimes I just CANNOT bring myself to tell him my truest feelings (it is even this way with my mom though and I've been in therapy for most of my life so I know all about the recommended way to communicate) so my question is has anyone experienced this and how did they break themselves down (positively bc this will help all future relationships with any human) for ur partner. How were you able to talk to them or go about managing anger? How can you be a decent partner and juggle this episode at the same time? And I really want this and want to work for it so please all advice. We have been together for almost 2 years and I don't want to lose him but I know I need to step it up. This guy wakes up early to take me to work and sits in hours of traffic with no complaint, he deserves more from me. So please, spare the judgement and if u made it this far thanks for reading. I appreciate any and all advice