As a 22-year-old man, what should I work on to become a good life partner?

I’m a 22-year-old man who’s trying to become the kind of person who would make a good life partner someday.

I’m not looking for dating tips or pickup advice. I want to work on myself in a meaningful way.

From your perspective, what qualities make a man someone you’d genuinely respect, trust, and feel safe building a life with? What habits, attitudes, or behaviors should a young man develop, and what mistakes or red flags should he actively avoid?

I’m interested in honest opinions and personal experiences, especially things that aren’t discussed often.