Usually only one of these voices will be holding the stage at any one time, the idea is not to get rid of the critic, because you need a little bit of them from time to time, but to quieten the critic and give your coach some scripts and words to use, then practice replacing some of those chat sessions as they come up.
Here are some inner critic examples that I’ve heard or had myself over the years, you may have your own. The idea is to understand what the difference is between our coach and critic and just start to notice, acknowledge and have a look at what you’d like to turn around, what is useful and not useful.
“I’m not smart enough”, “I’m not fill in the blank enough”, “I’m going to fail”, “I did fail”, “I will fail”, “I’m going to look stupid”, “what if people laugh?” Or “they will laugh at me”, etc...
This is a process of acknowledgement and recognition not judgement.
I suggest getting a journal or just some paper and writing down some of your own inner critic examples you are aware of.
Then you can get with a coach, a mentor, a trusted friend or just on your own, start to decide which scripts you will keep and which you may prefer to re-write, here is an example of how you can choose to re-write them, you can use a strikethrough which is quite a good visual way, like you are editing rather than rejecting.