What is more important in the quest to achieve success. Will power , skill or attitude or luck?

I think all factors contribute to achieve success because if you just depend on luck it may favour you once or maximum twice but will power , skills and right attitude will surely pay but sometimes if there is no luck the duration for being successful becomes bit long. So thats why i said everything plays its part to achieve success.

Passion. A burning desire filled with enthusiam and dreams.

This is something that will attract luck towards you and this is something that will drive you to work hard. This is that one thing that would make you have the right attitude too.

Will power and attitude