owl (esp. the Ural owl, Strix uralensis)
trouble (I have put you through); (your) hard work; thank you (for your hard work); I appreciate your efforts
overanxiety; needless worry
person who has been through a lot; worldly-wise person; one who has seen it all
nervous temperament; worry habit; pessimistic nature; pessimism
trials and tribulations; adversities; suffering hardships and troubles
to go through all sorts of hardships