Yeah, my life would be a lot easier if I didn't have that inner critic running the show in my head! I have tried this method of "shutting her up" before and it actually made those thoughts worse to my surprise. I'm not sure if the inner critic is something you deal with as well and/or if shutting it up works for you (sounds like it does) but my t and I came up with an alternative method which works better for me, and maybe for someone else reading this:

The inner child and inner critic are both having something to say about the situation. First, listen to the critic. Validate her and listen to what she has to say about the situation, then explain to her the facts and why it would be better/healthier to think "X" thoughts. Then when the critic is listened to, go over and soothe the inner child. This has been the only method that has worked for me but breaking the habit of internalizing those inner critic thoughts is a really tough thing to do, and something I'm prepared to work on for a very long time.