The important thing to know about healing your body is that there is only one thing on Earth that can heal the human body. It's not a pharmaceutical drug, nor is it a potion, a mineral, a herb, a tincture of powdered raindeer antler, lizard's beard or eye of newt.
It is, and can only ever be the human body itself.
Your body is an infinitely intelligent community of 50 trillion cells, that is capable of completely renewing itself every 7 years, it knows how to cure itself of every so-called disease and affliction that the medical community can make up, as long as we step out of our own way and allow it to do so.
I am not a doctor (nor would I wish to be one) and the therapies and practices are not medicinal in nature, but rather natural, age old practices that have lost or suppressed, along with the reasons for their use.
Adjusting your mindset is all about listening to your 'self talk' and noting when is speaking negatively about yourself... Realise that voice is NOT you, but it is a program designed to protect the child you were when you received some trauma, and it will kill you to protect that child if necessary.
So listen to what the voice is saying but don't connect with it (that is, don't let yourself respond with emotion to what the voice is saying but observe it instead) and then counter it with your adult voice.
if you are called to do something you are fearful of, your self talk will amplify that fear but you can counter it with your adult voice like explaining to a child why whatever it is, is not frightening at all.