Credit Limit Increase Wander

I remember the day I first started thinking about my credit limit. I had a card with a $1,500 limit that I had been using for a few years. I paid off the balance every month and thought I was doing everything right. But my FICO score was stuck in the mid-600s, and I could not figure out why. After some reading and a conversation with a banker friend, I learned that my credit utilization ratio - the amount of credit I used relative to my limit - was hurting me. That is when I