*[https://www.mindtools.com/ahpnreq/the-four-principles-of-change-management Four principles of change management]
*[https://www.mindtools.com/ahpnreq/the-four-principles-of-change-management Four principles of change management]
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*[https://executiveeducation.wharton.upenn.edu/thought-leadership/wharton-at-work/2019/06/personal-change-that-sticks/ Personal Change That Sticks: A Tool for Lasting Self-Improvement], Wharton School of Management