From Derek Sivers’ extraordinary book Anything You Want: 40 Lessons for a New Kind of Entrepreneur:

I was in Las Vegas for a conference, taking a taxi from the airport to the hotel. I asked the driver, “How long have you lived here?”
He said, “Twenty-seven years.”
“Wow! A lot has changed since then, huh?”
“Yeah. I miss the mob.”
“Huh? Really? What do you mean?”
“When the mafia ran this town, it was fun. There were only two numbers that mattered: how much was coming in, and how much was going out. As long as there was more in than out, everyone was happy. But then the whole town was bought up by these damn corporations full of MBA weasels micromanaging, trying to maximize the profit from every square foot of floor space. Now the place that used to put ketchup on my hot dogs tells me it’ll be an extra twenty-five cents for ketchup! It sucked all the fun out of this town! Yeah, I miss the mob.”

Sometimes MBA types would ask me, “What’s your growth rate? What’s your retained earnings rate as a percentage of gross? What are your projections?”
I’d just say, “I have no idea. I don’t even know what some of that means. I started this as a hobby to help my friends, and that’s the only reason it exists. There’s money in the bank and I’m doing fine, so no worries.”
They’d tell me that if I analyzed the business better, I could maximise profitability. Then I’d tell them about the taxi driver in Vegas.

Never forget why you’re really doing what you’re doing. Are you helping people? Are they happy? Are you happy? Are you profitable? Isn’t that enough?

Related: The Parable of the Mexican Fisherman