The Torah is written in a third person – so when it says, “And God spoke to Moses” – if it was first person, it would say “And I spoke to Moses.”
True sacrifice for God is to sacrifice all of your desires for God – including spiritual.
This is the purpose of prayer – to reach the level of Mesirus Nefesh – sacrificing.
Every letter, certainly every Crown all the Torah teaches us mountains of laws and secrets.
When Moshaich comes now and the essence of God is revealed – there will be no more physical nor spiritual illnesses.