My girlfriend (19F) and I (19M) are currently facing a difficult time in our relationship. What can we do to work through this?

My girlfriend (19F) and I (19M) have been together for exactly a year as of February 1, 2025. However, we are currently facing the toughest period in our relationship. While we've had disagreements in the past, they were usually over small issues. Recently, though, it feels like we've been in constant conflict for the past 10 to 15 days, particularly since Valentine's Day. The arguments we're having aren't just about normal, everyday mistakes; instead, they're more profound, focusing on our individual personalities and how we interact. It’s starting to feel as if we’re fundamentally incompatible, with everything we do seeming to trigger criticism from the other person—sometimes it's me, sometimes it's her. These disagreements often begin with something minor, only to escalate into discussions rooted in our behavioral traits and past unresolved traumas. I've realized that I haven't appreciated her efforts, primarily because she doesn't always vocalize them during our conversations, leading me to mistakenly conclude that she wasn't treating me well. She has since clarified this misunderstanding to me. I struggle with conflict—it's something that scares me deeply. I don’t shy away from it, but it’s my greatest fear. My girlfriend, however, reassures me that conflicts are a necessary part of any relationship and will occur regardless of my apprehensions. She's very expressive about what she feels in the moment, communicating her emotions directly. While I respect her honesty, that unfiltered expression can sometimes wound me, making me feel as though I’m constantly in the wrong. I've come to recognize some of my toxic traits, particularly narcissistic behaviors that developed as coping mechanisms for my insecurities. These traits have contributed to many of our arguments, and I'm actively working to reduce them for her sake. It feels like each day brings a new issue or unresolved matter, revealing yet another toxic aspect of my behavior that undermines our connection. Most of our day goes smoothly, but as night falls, something sets off a conflict that can last for hours, like what happened today. These issues are starting to impact our studies, which is a big deal for us since we are both straight-A students, and this disruption could have serious consequences for our academic performance. I’m beginning to feel like I’m not a good boyfriend to her. Despite all the wrongs and conflicts, she still chooses to stay with me, which makes me both happy and undeserving. When I realize I've messed up, I often find it difficult to apologize. With so many things I've done wrong, my apologies feel meaningless—a way to simply end the argument rather than addressing the real issues. I’m unsure how to navigate this situation and create a peaceful environment in our relationship. I truly love her and have no intention of leaving, no matter how hard things get. Yet, I also understand if she ever feels the need to walk away; she deserves someone better. **TL;DR:** I (19M) and my girlfriend (19F) have been together for a year but are now facing our toughest times, arguing almost daily since Valentine's Day. Conflicts stem from deeper personality issues rather than minor mistakes. I struggle with recognizing her efforts, fear conflict, and have identified toxic traits I need to work on. These fights disrupt our studies, creating stress. Though she remains committed to me, I feel undeserving and am unsure how to resolve our issues. I love her deeply and want a peaceful relationship, but I feel lost.