Yes, most blog posts go on to follow the same path as that of so called self-help books. But once in a while a sincere anecdote can make you think of fresh perspective on how to handle a situation in which you did not do better.
I think we as a generation should feel lucky to be living when Experimental Psychology is blossoming. Books from authors like Daniel Kahneman, Dan Ariely, Daniel Gilbert have had a life changing impact on my thinking. To really understand that our brains are not perfect - but are infact a kludge - makes you think about taking necessary precautions about these limitations.
And for productivity, number one thing that we need to outsmart is our impulsiveness.