If there's something keeping your mindwandering, allow yourself a specific (特定的) time to worry, think or plan.
如果你因为某事心不在焉，那就给自己专门腾个时间用来焦虑、思考或是做打算。
2
It`s common when you come back to work after a long holiday to find your mindwandering, especially after Spring Festival.
长假尤其是春节假期过后，很多重回工作岗位的人都会发现自己根本不在状态。
3
The plan didn't work. Some spirit of rebellion stirred in the son, sending his mindwandering during marathon prayer sessions, and he broke free in his teenage years.