When client for past few days tells you how important that new feature he wants is, and you should get to it asap.
But then when you actually start working on it after discussing it, specification creation and preparations, with mind set and focused, he tells you:
- 'Know what? I will need that change in the old feature before that. You can postpone the new feature by one day.'

So... How was it the most important thing in the universe again?