Question.
How much time does it take to change one's life?
Years?
Days?
There's plenty of literature out there (and in here, also) which tries to ask this question. Dante had to take a long journey throught Hell, Purgatory and Heaven to make his day.
Iago had to repeat his work of damnation over Othello in the course of days in order to cause his dismay.
The Old Man had to fight with a gargatuan fish for days, in the middle of the sea, with no food, water and only the laughs of waves as company.
But sometimes, it takes much less time.
Sometimes, it can be a matter of seconds.
Say... twenty seconds.