Hello! I've recently discovered about this guy named Dr. Andrew Huberman. He is "a neuroscientist and tenured professor of neurobiology and ophthalmology at Stanford School of Medicine". I've found that his videos super helped me with my lack of motivation issues. He has videos about every possible topic which I believe should help anyone trying to get better.
His youtube channel: https://www.youtube.com/c/AndrewHubermanLab His website: https://hubermanlab.com/