I don't think stopping practice will really do anything to combat mind-noise, but rather like you said would give it more power. I've been battling mind-noise for a few months (and I know Jack would probably point out my use of the word battling :P), so I know where you are coming from. Though mine usually consist of: "Am I doing things right? When am I going to cross the finish line? Should I do this or should I do that? Don't lose focus.. don't lose focus... crap I lost focus!" and generally annoying stuff like that.

I am still stuggling with mind-noise myself, but I have learned a few things that seem to lessen it a bit.

1. Stop worrying about getting to the good part, if you are feeling any pleasure at all, that is the good part. I've noticed the more I focus on reaching orgasm or whatnot, the harder it seems to be. However, the more I just enjoy what I am feeling, the easier it seems to raise in intensity. When I'm not worrying about getting somewhere, I generally don't have thoughts pestering me about it.

2. Another thing I do is remind myself that I am no more different than anyone else, I am capable of reaching the same heights as everyone else, so there is no reason to worry about the details.

3. Probably the most important thing to remember, which I've learned the hard way, is don't give your mind-noise any power. It is just doubt trying to bring you down, instead try to counter these doubts with positive thoughts like "this feels good, I know I can do this, I'm doing everything right". There are various ways to get these positive thoughts, one way is getting your keysound validated, one less thing to worry about.

Things will be fine, just enjoy the ride for what it is and not what it could be.