Over time and after quite a few conflicts, I realized an important thing - I should keep the conversation focused on the issue at hand and not criticize my partner at the core of their character. That’s the difference between complaint and criticism.
My partner would sometimes react strongly to a situation and it would catch me off guard. Over time we learnt to talk about it once things calmed down and it helped me better understand her triggers and how i can avoid them.
You know that saying, "All work and no play makes Jack a dull boy"? It's true for relationships too. If you're just going to run errands, discuss chores, and then zone out in front of the television for "fun," you're missing a whole level of connection.
No two individuals are alike. And expecting that one’s partner would be similar to us in every way would be unfair. It puts pressure on the relationship which might lead to conflicts in the long run. It is important that both partners feel free and unconfined in a relationship for it to nurture.
Before speaking with my partner about what's bothering me, I usually let him know what I hope to get from the conversation. e.g "I just want to be heard", or, "I want your inputs on something and love for us to problem solve together", etc.
Most couples avoid having difficult conversations that are necessary to create a life together. Instead, they try to avoid these issues and hope they would work themselves out. However, the truth is that they can't be on the same page without consistent communication.