Atlas00

I certainly think that's a major part of it. I think another important part is just not knowing what needs to be done immediately. The days where I have the discipline to compile a detailed list of things I need to do, I get a lot done. Days where I procrastinate heavily are typically days when I don't really know how to get started on a task or don't know what I don't know.

I remember hearing that the original graphene paper was initially declined by Nature because the reviewers claimed that isolating a 2D material was impossible. I feel that's a more firm rejection than many of those listed here.