Luck is what happens when preparation meets opportunity
Lucius Annaeus Seneca (c. 1 BC – AD 65): Stoic philosopher, statesman, dramatist, humorist.
Good luck comes to those that search out opportunities and are prepared to act when they find them. Being able to distinguish between true opportunities and high risk gambles comes from preparation. To put it another way, not being prepared leads to uncertainty, indecision and procrastination that ultimately leads to opportunities being missed.
Good luck follows opportunity: not being sufficiently prepared to recognise the opportunity is what makes people unlucky. But it is impossible to prepare for every opportunity. Clarity of focus and purpose and working towards that purpose daily will be the right preparation to enable you to recognise the right opportunities for you.