One year ago. I asked a worker to help me repair my old house. He had a bad first day on the job: his car broke on the way, then he found he had left his tools for work at home and his wife telephoned to say his son had a bad cold. While I drove him home, he was silent all the way. When arriving, he invited me to meet his family.
As we walked towards the front door, he stopped at a small tree, and touched the tree with hands. When we opened the door, I was very surprised to see he changed into another person and there was a big smile on his face instead. He hugged (拥抱) his son and gave his wife a kiss.
After a while, when he walked me to the car, I asked him why he had touched the tree just then. "Oh, that’s my trouble tree," he answered.  "Sometimes I have troubles on my job, but one thing is for sure, they don’t belong to my wife and my son. So I just hang up (悬挂) the troubles on the tree every night when I come home. Then in the morning I pick them up. "
“The funny thing is," he smiled, "when I come out in the morning to pick them up, I hardly remember what I put the night before. "
根据短文内容，回答下列问题。
How was the worker’s firs day?
Where did the worker stop as they walked towards the front door?
When did the worker pick up the troubles every day?
Did the worker remember fewer troubles the next morning?