I've come across an amazing book (and let me just preface this by saying I am in no way associated/affiliated with it or stand to profit from recommending it) called "The Winner's Bible" by an amazing fellow NZer, neuroscientist Dr. Kerry Spackman, who is a "performance optimisation" specialist, long term consultant to four Formula 1 teams, and retained by the NZ government to provide his services to elite athletes.
Basically the purpose of the book, as it states on the cover is to "rewire your brain for permanent change"
I was blown away as soon as I started reading this book. It is in no way anything to do with The Secret, law of attraction, or anything like that. It's based on sound science, and gives you techniques that will literally rewire your brain and change the way you look at things and pursue your goals.
I'll cut to the chase here - I'm rubbish at writing reviews, and could write pages on this book and how good it is, you can get it through Amazon, and someone there has written a much better review than I could so you might want to check it out: Amazon.com: The Winner's Bible: Rewire Your Brain... (not an affiliate link)
I'm sure this book will open your eyes to not only how you can achieve success in your business life, but in every aspect of it, and help you get over any hurdles in your way, even ones that are deep-seated, caused by events in your past. The techniques he describes in the book are really eye-opening and make a heck of a lot of sense at the same time. Get it.