What's the most important skill needed in research?

What do you think is the most important skill needed in research?

Some say good scientific writing and presentation skill. Because no matter how good your data or findings are, if you do not know how to present them (in English especially), nobody will ever read or pay any attention to them. This is so true.

Some say good hand skill. People with Green Hands can do whatever experiments they want and those experiments always work like magic. People with no good pair of hands like me really understand what it means!

Some say the skill to ask questions. I mean GOOD questions. What does this data mean? How does it link to the hypothesis? What are the differences of the work done by these 2 research groups? Being able to ask good questions means you've somehow had a good grasp of the topic and are able to analyse things critically.

Others say it's the people skill. How you communicate and get along with others, building networks and having international collaborations.

But I say the most important skill among all is 'believe in yourself'. You can acquire all the other skills by practicing harder or attending courses but not with the believe-in-myself thing. It has to come from inside. It comes when you are determined enough and have a strong sense of purpose. It comes when all things seem not working (no data + no research fund + time running short kind) yet you still hold on to it. And this is what some called F.A.I.T.H.