Not really surprising that
http://feeds.feedburner.com/KrisVikBookTherapyCafe is not up to date.
You've set your Wordpress syndication settings to have only 10 posts in your feed,
when an average feed with 25 posts is a tenth of that size.
Of those 10 post now, 3 specific posts account for 90% of the size.
Even reducing the number of posts in your Original Wordpress feed to just 2 posts
could break things at any point in the future.
Either split your long posts (or posts with a large number of images) into multiple
smaller posts, or only provide a short/summary feed to Feedburner to begin with.