He's also written a book: Amazon link. It's very short—I'm about half way through it after one sitting—and very good so far, albeit fairly duplicative of the TED Talk.
Edit: Fixed link
I'm not sure if you could buy this in a book store but it's called "How to heal a broken heart" by Guy Winch. It's available on amazon (as hardcover or kindle version): https://www.amazon.com/How-Fix-Broken-Heart-Books/dp/1501120123
It's short but I think it's worth it. The writer has a couple of TED talks, here is one. It's about going through a breakup: https://www.ted.com/talks/guy_winch_how_to_fix_a_broken_heart
I hope I was able to help and good luck on your search!