These are some quotes from the famous book "Think and Grow Rich", by Napolean Hill.
"Whatever the mind can conceive and believe, it can achieve."
"A quitter never wins and a winner never quits."
"Success requires no explanations. Failure permits no alibis."
"Whatsoever a man soweth, that shall he also reap."
"All impulses of thought have a tendency to clothe themselves in their physical equivalent"
Success is a choice, you choose to be successful , just as you chose to wake up today. If your mind can see it and live it, then your body and the world around you will make it a reality. This always used to sound like a hoax , but there is nothing closer to the truth. If you think about your life, everything you have and everything you are, are a direct sum of the thoughts you've had about yourself. Given some things in life come and look like luck, but I can tell you that if it came to you , it was the right time for you to receive it. Just some food for thought , since it all starts with training you own mind!