A rulebook guides the inexperienced to make rational decisions. This is true for money management too. Money rules help you keep your finances on track. But rule of thumb that do not fit your situation can be a waste of time, or worse, actually worsen your finances. They may be oversimplifying a complex issue which can harm long-term prospects and be a poor substitute for analysis. Here are five personal finance rules that based on your circumstances, you can consider breaking.