How I got landed a dataviz job at almost 30?

I’m not an easy person. I’m fast, loud, rarely satisfied, I have a can-do attitude, but I get bored easily. I’m a whirlwind, and sometimes people feel intimidated by me. I don’t think that someone is right just because he’s above me in the hierarchy, and it’s hard to shut my mouth when I feel suppressed. I had my problems with that attitude, and I felt that this is all my fault, while it was just not the right workplace for me.