I would add curiosity, openness and resilience to what has been said.

Persistance and courage. In other words, never give up and be brave.

Also, the most successful people are those who work doing what they love, rather than what they have to do.

Inspiration and perspiration!

I think planning for future considering the brighter side and what may go wrong. Of course strong determination and willing to proceed shall break through all the difficulties we find in the way to success...

By the way ... what is success?