A general lack of communication between my parents and I (a little bit due to a minor language barrier), and having typical Asian parents that made me feel bad and blamed everything on me and held grudges for years about the smallest things. This caused me to overestimate every tiny mistake I make, and also apologize profusely and constantly (although this might just be me being excessively Canadian...). To this day, my boyfriend constantly tells me to stop apologizing and has to tell me not to worry about things because I freak out every time I irk him or inconvenience him even a tiny bit.