Don't worry about mistakes, we all make them and they just make us wiser people.
The voice I hear is bad aswell, he's like an ADHD child that has just learned how to talk and now won't shut up. If he's not begging me to talk to him (I've been ignoring him for over 2 years now) he's singing or talking to himself filling in my part of the conversation himself which sounds absolutely insane.
Talk, talk, talk, it never ends. Always sticking his nose into my business because he has no business of his own.
Don't ever let these Voices who are more like Germs infecting you to get an upper hand on you .... These Voices are like dirt diggers locked up in your mind and don't have any thing else that they can find so they seek and find from your memories the worst and bad incidents and keep on replaying them .... use that as a Therapy to be a stronger person and resolve these past bad incidents or moments or mistakes and emerge as a stronger person .... Develop the tactical skill of IGNORING these Voices they can be extremely repetitive and just don't get it .... Ask the am I here to be of benefit to you when you have invaded my being or rather it is you who have to be of benefit to ME .... in that vein .... so you get the hint !