It is, of course, that time will not go backwards. Time once gone is gone forever. What we can do is to catch time for a best use for us when time is slipping by before our eyes. We shall seize time to serve for us in our daily life.
We wish to stay young forever, but it is only a dream. In reality, our face changes to older looking every year until one day we can see wrinkle in our face. However, it is a fact that any living creature will get older by the slips of time and then die. But, we can still do something to delay our aging. It is not to depend on medicine which, actually so far, has not invented. We have to depend upon our way of life which will lead us to a younger looking than our actual age.
There is no free lunch in this world. If we wish our looking to be younger, we have to pay price, not by money, but by our own human effort.
The way is to have a regularity of daily life, a decent life every day. We should have ample sleep, balanced food, adequate exercise, away from alcohol and smoking, no night life whatsoever, keeping a peaceful mind, and finally a stable financial position.
If you can apply to above-mentioned life, you can be looked at ten years younger when you compared with other people of same age. That is that your age of fifty can be looked as age of forty.