Success comes from experience and experience comes from problems we and failures we are facing in the life.
Success is not the monopoly of a single person, or a group. According to the law of nature, everyone is bound to failure and success. sometimes one and sometimes the other. These twin experiences are common to all human beings, both as individual and as a group. Those who are un-aware of this law of nature fail to learn any lesson from experience.
Also remember that more than luck, success depends upon your hardwork.
Those who depends upon only luck become lazy. So we should work hard to achieve our long term or short term goals.
We do not only need to work hard but also wisely :)