I seem to recall a study somewhere that grouped people into two basic groups with respect to their outlook on their studies. One group was those who believed that academic abilities were innate. The other believed that academic abilities were learned. (I realize that it's quite likely there's a whole spectrum to consider on such a complex and at times subjective parameter, but that's what I remember from the study).
Those who more strongly adhered to the "innate" outlook tended not to do as well academically as they went on. When faced with a choice of tasks they consistently chose the easier option. More of them failed to complete the degree they enrolled in, etc. On the other hand those who had a more "leaned" outlook tended to go further and do better because they more consistently challenged themselves and learned better from mistakes.
Study details aside, I suppose my point is that in terms of outlook, to the extent you can control it, it would seem better to adopt the latter one, because it allows you to grow more.
And cutting yourself off from others is generally not a great strategy in my opinion when it comes to success in academia.