In a classic research-based TEDx Talk, Dr. Lara Boyd describes how neuroplasticity gives you the power to shape the brain you want. Recorded at TEDxVancouver

She basically acknowledges that neuroplasticity occurs but we don't know exactly how to make it repeatable. At the end she uses the 'All stroke recoveries are different' as an excuse for why broad protocols can't be setup.
https://www.youtube.com/watch?v=LNHBMFCzznE