take each interview differently,apply your answers to the job you are there for,if its a bin man dont go talking about your 12 degrees and polo club membership becasue they will think you will get bored in the job and move on. make sure you know what the job is,get background information on what the company does,and what the job will entail,then base any answers around that,you need to seem fairly knowledgable of what you will be doing.