I want to be more articulate any advice?

I want to be more articulate any advice? I’m tired of letting my stutter make me dumb down my words and vocabulary when I talk to people. I know I’m a smart person and every time I think of something great to say I have blocks then I have to dumb it down to the point to where I’ve kind of just adopted slang to help me cope but I want to come off as who I really am. I want to dictate my own life and be myself and not let this take control I want to be more articulate and just be an overall better speaker so people will take me seriously.