How do i become more outspoken and voice my opinions?

I'm kinda on the shy side when i'm around people outside of my household, I know there's nothing wrong shyness because i might just be an introverted person, but i still which to be able to be more ertive and be able to be more opinionated and not just agreed with what people say because i fear what people think. Also I want to not be afraid to stand out more and just be happy with the decisions I make as long as they are not wrong, and just be like screw what people think. I guess you can tell from this that I'm not the most confident person but that's why I'm asking this question so I can work on my self confidence.