Is it really almost February? What happened to January? When I look back on the month, I realize now that I had a whole series of flow experiences during which I used my knowledge and skills to their full capacity, became totally engaged and fully invested in what I was doing, and ultimately lost track of time. Flow is a construct described by psychologist Csikszentmihalyi. It occurs when one is so entirely immersed in an experience or activity that sense of time is lost.