Noa Kageyama's (MM, PhD) blog Bulletproof Musician has been essential reading for a lot of us since it began. It was such a treat to sit down and chat with Noa about how he got started, studying with Shinichi Suzuki, challenging the Gladwellification of performance psychology data, and so much more.
Find his blog here: https://bulletproofmusician.com/start-here/
You can enroll in courses (live cohorts and asynchronous learning) here: https://bulletproofmusician.com/courses/