Humans vary considerably from one another– with each of us having an idiosyncratic, subjective viewpoint. How inter-individual variation in behaviour relates to diversity in brain function is poorly understood. In my talk, I will focus on brain-fingerprints, a set of functional neuroimaging features that reliably distinguish individuals from one another. I will describe work from my PhD studies at McGill University on brain-fingerprinting and its application to clinical and cognitive neuroscience.