More about positive and negative thinking ...
As in most other cases, the longer you search for and investigate a specific topic, the more arguments and articles you will find for both sides of the story. Same here for my topic from yesterday --> Think positive and be positive.
For a clean start, just try to understand where YOU are in the moment and do a quick test in 14 simple questions about "Are You a Positive or Negative Thinker?" at https://www.mindtools.com/pages/article/newTCS_89.htm
After a more theoretical and scientific approach to the topic of positive thinking http://www.huffingtonpost.com/james-clear/positive-thinking_b_3512202.html , also some practical tips for the day-to-day use http://www.success.com/article/7-practical-tips-to-achieve-a-positive-mindset
And as promised also the opposite side of the story, describing the "The Positive Power of Negative Thinking" https://www.linkedin.com/pulse/20131015140307-69244073-the-positive-power-of-negative-thinking
In summary we have to make the call and decide for us, what kind of guy we are and want to be. Personally I am an optimistic and positive guy, applying common sense as often as possible and keeping things simple and straight forward. I like to approach things differently like the FISH! philosophy for example --> https://www.youtube.com/watch?v=_AAQT6ifGys (have fun and enjoy the show😀).