After 30 years old, I am going to rush to 40 years old.

Some people say that people are dogs, afraid of dogs at the age of twenty, watchdogs at the age of thirty, wild dogs at the age of forty, sick dogs at the age of fifty, old dogs at the age of sixty and dead dogs at the age of seventy. When you cross the threshold of 30 years old and reach 40 years old, you become a wild dog from a watchdog.