Whenever I live in a big city, my personality changes.
When I live in a big city, I become more impatient and get frustrated with things more easily.
この場合、次のような言い方ができますよ。
ーWhenever I live in a big city, my personality changes.
「都会に住むと、性格が変わる」
ーWhen I live in a big city, I become more impatient and get frustrated with things more easily.
「都会に住むと、せっかちになり、すぐイライラする」
ご参考まで！
カナダ 
