Why is there a great sense of loss and frustration after the trip?

Generally, there will be a great sense of loss and frustration when you come back from a trip, because you are too relaxed when you travel, and you will feel lost when you return to a stressful ordinary life.

At this point, the way to adjust yourself is to remind yourself to concentrate on everything at any time: concentrate on vacation, concentrate on study and concentrate on work. Concentrate on everything, and it will be all right after a while.

I saw beauty, but I was a passer-by in a hurry, and I was lost, or I was lonely after returning to dullness. I must learn to be alone.