Depend how you define being smarter. Being aware of your bias is a possible initial approach. For a list try start reading from https://en.wikipedia.org/wiki/Li

Depend how you define being smarter. Being aware of your bias is a possible initial approach. For a list try start reading from https://en.wikipedia.org/wiki/List_of_cognitive_biases https://en.wikipedia.org/wiki/List_of_cognitive_biases (some of them have nicer explanation in i.e. http://youarenotsosmart.com/ http://youarenotsosmart.com/ )