Millionaire investor Michael "Rooster" McConaughey has a very specific marker for success.
"Hey, if you've got two cars, monetarily wise, you're successful," said McConaughey, co-chairman of the West Texas Investors Club, the investment group he started with his friend and business partner Wayne "Butch" Gilliam.
McConaughey, who built a lead pipe empire worth millions, described getting a second car as "the greatest thing that ever happened" to him.
So why use two cars as a benchmark for success? It's really about having convenience, he said.
"Money is all about convenience anyways. I mean how much do you need? You know?" said McConaughey, who appears on CNBC's reality pitch show "West Texas Investors Club". "When you only have one car and you have a flat, you're late to work. If you have two cars, you can get in the other one."
But there are limits to what this millionaire will spend on convenience.
"Having just a ton of money, people want to know why I don't have a private jet. Hell, I meet some of the coolest people in the world in the damn airport," he said.
Money aside, success is all about reaching your own personal benchmarks, McConaughey said.
"Success to me is hitting the goals that you wanted to hit," he said. "There's money enough to go around for everybody, but being good at whatever you wanted to be is what success is."
Disclosure: McConaughey appears on CNBC's "West Texas Investors Club."
The show airs Tuesday at 10 p.m. EDT.