People who succeed have the same thing in common which is hard work, and also, luck seems to be always followed after the hard working for them. In my opinion, luck has something to do with success, but only for people who always do very hard work.
In Korea, we normally say that people get three lucky chances to succeed in their life, and people need to get one of those chances to succeed when luck comes around them; however, unfortunately everyone can not see those chances and get them on time. This old saying is always based on the premise that people have to work very hard for their future and they can be able to have the lucky chances. For example, a leader of Samsung, which is the biggest company in Korea, has become succeed by hard working and luck. He had to work very hard to survive after Korea War instead of studying at school, so he had worked at grocery store since he was 13. He always worked so hard that the owner of the store was impressed by his good attitude and sincerity toward his work. Several years later, the owner gave him a chance, which is the first luck to him in his life, to open his own store and that was the foundation stone to get more successful in the future.
We can find a lot of people who are doing hard work all the time, but as we see, only few of them are able to succeed in their life. I think this is because luck is very important to make people succeed as well as hard work. However we have to remember that luck always follow people who work very hard.