Have you noticed how everyone, regardless of station in life, seems to think their problems are paramount to all others? This may indicate that everyone's problems are the same size; the actual objective import of the problem becomes irrelevant on an individual basis. Bill Clinton worrying about Monica was as distressing to Bill as the mortgage payment was to a single parent looking for work, for instance.
If you turn this around, you may see that our goals, capabilities and accomplishments are of similar size as well, generally just as meaningful to each individual and their circumstance regardless of objective, collective importance.
That being said, brilliance is best seen when one succeeds in expanding whatever field of endeavor in which they are involved. Looking at things differently and seeing old things in new ways...imagination and, indeed, persistence, is the font of brilliance, in my opinion. Imagination can be applied at any level to anything so anything goes.