I dropped by a bookstore last week and ended up in the Travel Section. I browsed through most of the travel books and ended up with the latest copy of Lonely Planets' Europe Guide. It is about 2 inches thick (how i missed reading from a hardcopy book instead of digital copies). Inside the book is a list of 39 possible countries to visit in Europe using this guide and I looked at which country I have visited and I only ended up with 5 namely Britain (mostly London), Italy, France, Germany and Russia. That means I still have at least about 20 countries to visit and I am not getting any younger.
Anyway, before the end of the year 2018 (fingers crossed), I am planning to visit at least 4 countries in this book.