One of the things I love to do is read up on the Power Of Practice. Below are some of my favorite articles on this subject.
Harvard Business Review: “The Making of an Expert”
https://hbr.org/2007/07/the-making-of-an-expert
Business Insider – “A top psychologist says there’s only one way to become the best in your field — but not everyone agrees”
http://www.businessinsider.com/anders-ericsson-how-to-become-an-expert-at-anything-2016-6
eLearning Industry – “7 Gold Standards Of Deliberate Practice: Why Max Verstappen Has No Talent”
https://elearningindustry.com/7-gold-standards-deliberate-practice
RAIN Group – “Why 90% of Sales Training Fail”
https://www.slideshare.net/MichaelSchultz12/why-sales-training-failsweb
Public Library of Science – “Best Practice” Skills Lab Training vs. a “see one, do one” Approach
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0076354