Saving money can be a challenge for most people, but it's not impossible. Yet, if you were suddenly hit with an unexpected bill or emergency, would you have the cash to cover it? According to a recent report by CNN Money, nearly 40% of Americans don't have enough savings to cover a $400 unplanned expense. Living paycheck to paycheck can be stressful, but there are ways to set something aside each month for savings and retirement. Here are six strategies to start saving more money, even when funds are limited.