Spin it positive by saying I tend to be a perfectionist so it may take me longer than the average person to perform but it will be done right.
well if the job is in sales you should say something like 'i would probably talk to the customer too much, i hope that's not a problem i just really enjoy people.' You need to reverse the pschology of the situation, eg: What is something the employer will need you to have in personallity that you could use as a reply that fits the example above?