Over time I started noticing that you could pretty much pick anything published on his blog and find an earlier post contradicting it. Try it for yourself, find a post you like on the blog and then google "[subject] site:zenhabits.net" and smile as you see the contradictions that appear.
Life isn't straight forward and if it was as easy as following simple step by step instructions the "self-help" industry would be redundant. Life is difficult, do whatever it is that works for you and if anyone says they have found the "secret to success" take it with a grain of salt.