One thing that can derail people digging themselves out of debt are the random unexpected setbacks life likes to throw at us to keep us on our toes. The accidental parking ticket, the bike that breaks down, the illness that requires pricey pills. Any of these can be enough to upset even the most carefully orchestrated budgeting and debt payment schedule, unless, you are smart like Ramit Sethi, and set up a “stupid mistakes” sub-savings account. Here’s how it works. [More]