I worry that if I continue to pursue my passions wherever they may lead I'll never achieve anything of worth. My work is steady and relatively free of distractions, but it's rare that any research program can hold my attention for say a month. I know expertise takes years to cultivate, but even in the domain of my degree (a subject no one knows fully) I feel I'm barely able to hold everything together. And yet most with their blinders find themselves blinded; what great things have been lost to this?