One of the common mistakes in judging which player is ahead in terms of territory in the middle of a game is that you may apply different standard or method to count you and your opponent's territory. In other words, you may be either more generous or stricter to your territory. Yet, obviously the fairer you could be the better counting skills you would enjoy. Also, you've got to compare territories and understand the status quo properly in order to make a winning strategy.

Although, unlike baduk, I do not need to or should not compare myself to others, I sometimes can't help doing so. Therefore, instead of pretending not to care, and inwardly being either under or over confident, maybe I should learn how to use the same scale for others as the one for myself. Just like I learned in baduk.