The first part is the meat: Rahm is Rahm’s own best counsel on everything.
The rigor of a the modern presidential campaign, which basically goes full-time for four years, requires you to trust people. You have to have faith in their intelligence, smarts, and that if they mess up, it’s okay, it’s not the end of the world. You have to give yourself, your family, and your future over to people who you never met.
(If this reminds you of President Obama and his early frustrations as a candidate, you’re not alone. Obama had a to learn to trust people before he could run.)
The pressure of trying to do it all yourself is too much, and that’s not in Rahm’s nature.