Mostly because the more complicated everything is, the less likely I am to both understand it and act on it.
I wear nearly the exact same thing everyday, having one less thing to fool with in the morning.
Same drink for lunch, few apps on my phone, a minimalist mentality – you get the idea.
Writing can be another place you do this.
You don’t burden yourself with the complexity of finishing a novel, a chapter, or idea: The work becomes the goal, not the result.
Business too. You do not want ambiguity in where an employees responsibility is.
Employees should have a clear role in a larger picture.
The same is true for combat.
“Combat, like anything in life, has inherent layers of complexities. Simplifying as much as possible is crucial to success. When plans and orders are too complicated, people may not understand them. And when things go wrong, and they inevitably do go wrong, complexity compounds issues that can spiral out of control into total disaster. Plans and orders must be communicated in a manner that is simple, clear, and concise. Everyone that is part of the mission must know and understand his or her role in the mission and what to do in the event of likely contingencies. As a leader, it doesn’t matter how well you feel you have presented the information or communicated an order, plan, tactic, or strategy. If your team doesn’t get it, you have not kept things simple and you have failed. You must brief to ensure the lowest common denominator on the team understands.”
–Jocko Willink and Leif Babin, Extreme Ownership