set in your ways
US /sɛt ɪn jʊər weɪz/
UK /sɛt ɪn jʊər weɪz/

1.
固執, 墨守成規
unwilling to change one's habits, opinions, or way of life
:
•
My grandfather is very set in his ways and doesn't like new technology.
我爺爺很固執,不喜歡新科技。
•
It's hard to teach an old dog new tricks, especially if they are set in their ways.
老狗學新把戲很難,尤其是當他們固執己見的時候。