"there is a problem" \- tongue doesn't have a problem, yes indeed, we are able to 'choose' to move our tongue when we speak \- what is holding us back is 'forcing/trying/controlling'. So, always have intention to move your tongue while being aware of your anticipatory anxiety without reacting to it. If this is hard for you, you can go to a professional psychologist who does mindfulness and ERP-based therapy. Tell the psychologist that your habit is to react to anticipatory anxiety which creates fight flight **freeze** response that freezes your tongue. Then he will give you exposure therapy (ERP) to build tolerance of anticipatory anxiety and detach importance from anticipatory anxiety If you 'push' then you will focus on pushing/forcing, instead of focusing on 'the intention' to move your tongue. So, if you are focusing on secondary behaviors, interventions or [anything](https://i.imgur.com/upOYEyB.png) other than 'intention to move your tongue' then you will stop 'having intention' to move your tongue. The negative effect is that it creates a stutter. Even non-stutterers need to focus on the intention to move their tongue, during speech otherwise they won't be able to talk, this is a fluency law as explained [here](https://i.imgur.com/nElRklJ.png).