A surprising number of people who are ‘unretired’, are interested in becoming a thought leader. Read this blog by Pat Chapman-Pincher to get ideas about what this might look like.
And if you want to go ahead with your own blog – have a look at the tips here about writing your own professional blog. http://www.northernlightspr.com/how-to-write-a-business-blog/
It isn’t about what you had for breakfast!