Define luck for yourself. We usually think of luck as something that's out of our control, expecting something or someone to descend on us from the clouds and improve life for us. But fortune and fame don't come to the passive. Waiting around for luck instead of creating it for yourself can create negativity and resentment, forcing you to see other people's good fortune as the result of good luck rather than good choices.
Think of luck as an emotion, more than a certificate or a ticket that gains you access to some exclusive club. Just as you decide to be happy, you can decide to be lucky and become willing to change your behaviors and create opportunities for success yourself, rather than waiting for changes to happen.