“Part of what I have had to do over time – and what I am constantly working at – is getting that balance right between … across the detail and understanding every aspect of something, and then realising I know as much, or have done as much, as I need to on that, and my time is better spent elsewhere.”
Article source: https://www.huffingtonpost.co.uk/entry/tory-leadership-candidates-weaknesses_uk_62d19dbee4b092a3f6bbdf55