zen
adjective informal uk/zen/ us/zen/
放松的;（对无法改变的事情）不担心的
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。