If I had to pick one trait that was the most important, it very well could be confidence. Confidence is the trait that fuels all the other ones. If you truly believe in your ability to reach your goals, you will be able to persist, focus, etc… If you feel your confidence is wavering, check out the video below for a boost.
[embedyt] https://www.youtube.com/watch?v=8SC7-EUkFNo[/embedyt]