How to Deal With Anger and Sadness in Relationships

I think personally anger and sadness are probably my two like quickest trigger emotions sort of. When I first started dating James and also just like dating in general I feel like there were a lot of things that would like annoy me or I would be mad at  and then I would go into these fights feeling that emotion already. Any sort of fight that I would start where I was mad it would always end poorly because it's like I'm in there with like a certain aggressive mood or emotion or something so then I realized that like fights that happen when I'm sad go better you know? It feels more like oh this as you said like a result and then you're like okay well what can