Discipline is extremely important. Don't put off making a payment. Make your payment as soon as you receive the bill. It is always a good idea to make a payment that exceeds the minimum payment by a good amount. A good rule of thumb is to spread the payments to payoff the loan in a year or less.
Patience is more than a virtue.
It takes time to build excellent credit. It cannot be done overnight. Be prepared to take the time. This is not a way to get credit, but if you have little credit and want to build it, this approach has been proven to work. Borrow close to your limit, but not too close, that the finance charge will put you over the limit.