i never estimate my losses because i know it will only turn me down,what i am concern mostly is the amount i won and that brings me positive feelings.
i know a man that writing in all his gambling activities,from losses and winnings and he tells me that it made him sick sometimes checking how much he losses while the amount of winning is very little compared to others.
If you have money and inspite of losing in gambling you are fine with it then no issue else very vital to keep a track of both profits and losses and understand that is it really worth losing the money in gambling considering if you play big bets and losses are in thousands. If those are very small amount then no worries about it.