I would like to answer this by first distinguishing that there is a difference between REMAINING debt-free and BECOMING debt-free.
Remaining debt-free is when you maintain a debt-free status. Either you have never been in debt or you dug yourself out of debt.
You remain debt free by, obviously, not borrowing money, charging items on credit cards, or financing items. Essentially you should live within your means and build your savings.
There really is no "easy" way to become debt free. It's easy to figure out a plan for becoming debt-free but the actions do take some work.
The easiest way to become debt-free is to look at your total debt so that you understand how much you owe.
Then look at your current budget. Decide on a set monthly amount (the biggest chunk you can afford) that you will use to pay off a portion of your total debt. Eventually, if you keep up on payments you will diminish your debt into nothing and you will become debt-free.