Management is my forte. A lot of it deals with psychology from the top down. Key is training and regulating your top managers then they in turn supervise the downlines. Therefore buffering you from any resentment from them.
My recommendation is for you to read Ken Blanchard's One Minute Manager. I had my employees read this to help streamline my organization.
I have others' but it's geared for corporations. I'm not talking about The Prince Machiavelli or Art Of War either because that's a standard for anybody in management. I've read two versions of it. Those books will only make one more duplicitous. Not recommended if you truly want to be a great manager and leader.
Inspiration is the way to go. You're mid level management so you'll know who you can trust and depend on. Sometimes you'll have to fire people and that's the way it goes. That's equally important as that will show that you're kind, but you are in the position of authority. That alone is worth more than simply berating someone. Never berate your employees although I have after they lost me thousands in a deal...haha.
Read it and it'll open you mind. Good lucky buddy!
PS: You can always refer to Dunder Mifflin.
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.