Monica Ali

People don't get involved with local charities or politics because they think it's hard to make a difference and the problem feels overwhelming. But I believe that if all I've time for this year is to write one letter to the local council, it's still worth doing.

Kids are naturally inventive and curious and creative, but most adults have had that beaten out of them. Writing is a form of play; you have to get rid of all those internal censors that we adults have, the things that say, 'Don't go there, that's not allowed.'

The jet stream is a very strong force and pushing a balloon into it is like pushing up against a brick wall, but once we got into it, we found that, remarkably, the balloon went whatever speed the wind went.

Sometimes it's even hard to tell the difference between a tic and a compulsion. But while tics stem from an urge in a specific part of the body - either completely unconsciously or through a premonitory sensation that's satisfied only by the tic - OCD bubbles up as conscious thoughts in the mind.