What is the single most important character trait Europeans needed to have to be successful when colonizing North America? What is the single most important character trait you need to have to be successful when you graduate?

One of the single most important character trait that Europeans needed in the North America is citizenship, I know they need this because for instance during the cold harsh winters if they would run out of food another citizen could help them by supplieing them with food through the winter. Another time they would need this would be when a woman doesnt have a husbin and she cant build herself a house the others to eather take her in there own, or even pitch in and build her one. I think the single most important character trait I want when I graduate would be resposibility because I mean you are going to be responsible for a lot of things in life for instince your kids, your car, your house, and your spouce so you have to do your job and take care of all that and not let people down.