Being ready does not happen overnight. It takes years of preparation.
Then one day after years of prep an opportunity knocks on your door that changes the direction of everything you do. Most people will call that luck. Luck certainly plays a part, however, without prep the luck would not go too far.
So prepare every day, nay, every hour towards your chosen dream. Then when luck shows up at your door you will be able to fully seize the opportunity!
When prep, luck, and opportunity coincide you get the formula for success!