Having a low credit score can be very expensive and cause you to miss out on opportunities. In my case, I was trying to refinance my $300,000 mortgage. My credit score was 620 because I had some negative items on my credit that I wasn't aware of, and extra debt on my credit cards that I could not afford to pay off. I was quoted an interest rate of 6.25% because of my low credit score. Instead of taking the loan, I repaired my credit by removing...