1. You Don't Do Repairs
You're required to insure your car, as well as any collateral loan. Other than your health, there's nothing else you should be paying to insure. There's no need for a $7 a month cell phone insurance plan or any extended warranty. Just respect your belongings, and, if something does break, look up how to repair it online.
There is no end to the DIY books, videos, and pictures online, teaching you (for free) how to fix anything. When my Xbox 360 red-ringed a few years back, I fixed it myself, despite having never taken apart a video game console. You can learn to paint, fix a toilet, replace parts in your appliances or anything else online.
"We're living in the age of how-to and DIY content marketing," says Jody Lamb of RepairClinic.com. "Since our founding in 1999, three million customers have saved $250 million by completing repairs on their own."