I don't know of any 'solution' to this (if one agrees it is something to be solved), though to deal with your inner voice, it's best to listen to it, and I think that meditation can be a good way to do that.
Sometimes I'm arguing on HN or imageboards etc. and I think that to wind down from it all, to realise the impermanence of it, it's good to meditate, noticing the thoughts that appear in your mind. No distractions, music etc.