it's all in the mind; everything depends on your attitude
Proverbial expression meaning that one's mindset or perspective determines how a situation is experienced.
Even the same job can be enjoyable or painful depending on your mindset.
It's all in the mind, so let's think positively.
Standard kanji spelling for this idiomatic expression.
Alternate kanji spelling using 様; less common.
A set phrase combining 気 (mind/spirit), は (topic marker), and 持ちよう (way of holding/handling). The exact origin is uncertain, but it reflects a common Japanese cultural emphasis on mental attitude.