By attacking those he needs to govern and legislate, he is jeopardizing his ability to do those things IMO. It seems to me that he either doesn’t care that he is inflicting wounds on his own ability to govern and legislate or he just can’t help himself. I suspect it’s more the later. I believe Trump to be impulsive, not detailed oriented, and basically undisciplined. I think Kelly is trying to establish some discipline in the White House. Over time, I expect Trump to rebel against this discipline because I think he just likes being more free-wheeling. That’s not a good trait to have in the Oval Office IMO, and we’re seeing the results with conflicting messages coming from this Administration (e.g., no talking with North Korea versus diplomacy is always on the table) along with the breaks we’ve seen between members of his Administration with the President (e.g., Cohn, Tillerson, Mattis). I doubt Kelly will last a year (unfortunately, because I think he’s doing the best he can).