Deryck: Tone is important. It's if you are giving somebody the benefit of the doubt and not being mean or getting cranky. I think a persistencep so, so well, said i should raise the bar. Maybe i should raise it to two then. Now your give me some ideas here. Ho, k sus, before we move on, is there anything else in terms of persistence that you'd like our listeners to know about? Do you have any tips for deryck? Email us at jennifer.smith@mailonline.co.uk.