On the subject of credit and debt, one thing comes up over and over again - credit score, and the importance of having a good score.
Yes, having a good score is important, but hardly the only factor in handling your finances and debt.
Other factors include things like debt to income - or the percentage of your gross monthly income that is taken up by debt - plus loan to value / downpayment and savings.
There are people who pay their bills on time and therefore have a pretty good score, but are living paycheck to paycheck and have no savings. Or they are that way because they have too much debt overall, even though they pay all of the bills on time.
My point is simply - you can and should have a good credit score, but it is not the only factor. Don't get fixated on score when having a good score can lead you to financial trouble!