Are you familiar with Tony Wright's work on the human brain and fruit symbiosis? It's fascinating and in my opinion nothing is more useful for motivation to eat healthy!
Here is a recent presentation giving a more comprehensive look at the research
Tony is an amazing guy but has always been very resistant to receiving outside help on his groundbreaking research. We finally have talked him into creating a Patreon page in order to assist him with bringing this theory fuller into mainstream awareness through pursuit of several new projects!