I think spiritual techniques are for making subtle but steady improvements to yourself. When there is cancer already existing, something more powerful and fast-acting might be required...
Most people reading this won't agree with the following, but I think it's better for me to just post it even if there's only a 1% chance someone might take it seriously as opposed to not posting it at all, especially in the case of something as serious as cancer: high-dose aspirin along with Vitamin K is effective for all sorts of cancer, based on the work of a researcher who I have been following for over three years now and whose ideas I have implemented into my life with great success. The reason is that aspirin acts on very fundamental metabolic system to make your whole system unfavorable for the growth of cancer.
There's a very strong cultural prejudice against aspirin (possibly engineered by Jews because of how strengthening aspirin actually is on a hormonal level), so I might be attacked by you/others for this post, but if you are willing to be open-minded, let me know if you would like more information.