Early retiree Chris Reining, who built a $1 million portfolio by age 35, will tell you that the key to saving half your income is to start with the small stuff.
"I know there are some people out there that say you shouldn't worry about the $5 latte, but the more I think about it, cutting out the $5 latte was a good place to start," he tells CNBC Make It. "Because if you try to downsize your house, get rid of all yours cars and make all of these drastic changes, it's so overwhelming and you're not going to do any of it."
After foregoing his morning coffee, Reining eliminated the $15 lunches he bought every day. Next, he cut out the bigger things, such as the $1,000 a month he spent flying airplanes. "The small changes will lead you to be able to make the big changes," Reining says.