"It's amazing how many people can't do the simplest of things — like balance a checkbook, fill out a tax form, make sure that there's more coming in than going out, [set] aside reserves for contingencies," writes Miles Fidelman.
Let's start with "mak[ing] sure that there's more coming in than going out," which is essentially about adhering to a budget. We rounded up the best budgeting tips from readers who have shared their budgets with Business Insider.
For example, you'll want to anticipate any major costs in the near future — like if you're planning to have a kid or go back to school. It's also wise to set aside an emergency fund with several months' worth of expenses in case the unexpected occurs.