There are tons of personal finance books out there that will preach the idea of the “latte factor”. The premise of the idea is that the average cost of a Starbucks latte is around $4. Therefore, if you stop going to Starbucks each morning and make coffee at home instead, you will save around $120 per month and $1440 per year. Although I do agree that making this change will improve your saving rate, it’s not the most significant factor in how much you save each month. If you want to drastical...