Unfortunately it requires a lot of unlearning. While this is more of an observation through experience - there is no ONE way to make a sound or even a specific phoneme, it is a spectrum. In very much the same way your ‘walk’ is uniquely formed from more or less a blank slate, so is the way you use your voice, mouth, etc.

So to properly process and form phonemes that your native language doesn’t have is an additional challenge and if it requires unlearning bad habits you have exponentially more work to do. That says nothing about the other mechanics of the mind-body connection