Practicing a sensible investment style consistently is important for investment performance. There will be periods when a style will be out of favour. And with each year of underperformance, one will wonder if the style works (Warren Buffet in 1998-2000; Prashant Jain in 2015-2019). The tendency to dump the out of favour style and hug the popular style is highest at the time when the out of favour style starts working again (both Warren and Prashant came out on top as cycle reversed).
So if the style makes economic and rational sense, there is need to endure especially when the confidence is low.
