On the mental side of things I have taken extended time off martial arts, the last time due to a shoulder injury (bursitis) and found my motivation high after coming back, much better than when I was carrying on with an injury. I guess this is an individual thing.
I do tae kwon do and sparring is a major component. Not a high grade but not junior either.
One thing that is playing on my mind the most is the statistic that 80% of people who do their ACL end up doing theirmeniscus. Based on this it would appear that if I keep training up to surgery there is the inherent risk of doing more damage to my knee? In that case I don't believe I am being overly cautious in stopping the training until it is fixed?