Dealing with stress

I came across a video on internet the other day.
It was a video of a lecture, where the prof asked students, while holding a bottle full of water,
“What’ll happen to me if I hold this for a minute?”
Students’ answer was “nothing”
Then the prof asks again
“What if I held this for an our?”
Students answer “your arm might become sore”
“What if I held it for an entire day?”
“You’ll suffer a sever pain”

Prof let go the bottle and turns to students, saying
“Notice that the weight of the bottle didn’t change at all”
She continues
“Even if the problem is small, by holding that for a long time, it could become a major stress for you. Sometimes it is better to just let go of the problem, rather than looking for a right solution.”

This was kinda inspiring for me. How important it is to let go your problems.