i must admit circuits can become quite tedious and tiring, ive done about 6 lots of 5/6 takeoffs per session and i found 5 was more than enough, around half of those where crosswind landings and these are what really tired me out afterwards & some days as you said i would walk away feeling quite despondant about my abilities in handling the ac in a crosswind landing, its a bit of a challenge crabbing her in then straightening up before touchown and throwing some into wind aileron in but you do feel accomplished when you can pull it off and the Instructor is happy enough, but any landing you can walk away from is a good one as they say
, keep at it,