relaxed and not worrying about things that you cannot change
Don't worry about doing the right thing with your baby - be more zen about it and you'll be happier.不要担心为自己的孩子你是否采取了正确的行动——越放松你就会越高兴。
Zen
noun[ U ]uk/zen/us/zen/
禅，禅宗（佛教派别之一，强调禅定而止息杂虑）
a form of Buddhism, originally developed in Japan, that emphasizes that religious knowledge is achieved through emptying the mind of thoughts and giving attention to only one thing, rather than by reading religious writings