Only gamblers stay a full month without refreshing their memories on what the already know because in as much as trading is concerned there are multiple ways of predicting market flows and it only takes consistent research to get a hand full of approach to maintain a good profit margin in trading.
It seems to me that the importance of self updating and learning is one that many disregard or do not think of it as essential when in fact it is crucial to judge timings of a trade. To my view, this manner of self-learning and refreshing is one that goes beyond trading and into the general lifestyle. It is a petty to see that not many people underestimate the power of knowledge, and especially, its power to trading.