Diagnostic icon Campbell Macpherson2017-03-20T09:17:44+00:00 Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail About the Author: Campbell Macpherson Campbell Macpherson: international business advisor, change expert, keynote speaker and author of 'The Change Catalyst: secrets to successful and sustainable change' (Wiley 2017) - the 2018 Business Book of the Year.