My yoga teacher said that it's usually the poses that we dislike that are the ones we need the most 
My favourite poses are -
Love sun salutations
Love warrier sequences
Dancers pose
Goddess/butterfly
I used to dislike Dolphin and fish poses but have enjoyed seeing my progress with them and the challenge as continue to push and breath through them 
My least favourite are -
Anything involving hamstrings, mine are so tight I really struggle with them
Really want to do shoulder stand but haven't got the control to get up there and our teacher tells us off if we look like we're throwing ourselves around to get up there!
Camel pose - although am working on it!
Boat pose - my core shakes like anything straight away!
Eagle pose - can do the lower body but can't do the arms at all, are my arms just too short?!