'On the seventh of July 2005, just after 9 a.m., do not catch that westbound Piccadilly Line tube into central London. Turn back. As I did. '

I have no advice, only a practical warning. Make a note in your diary. On the seventh of July 2005, just after 9 a.m., do not catch that westbound Piccadilly Line tube into central London. Turn back. As I did. Your best writing will still be ahead of you.