Rebirth of a Young Girl

A 45-year-old middle-aged man became a street sleeper due to bankruptcy. He lived on different streets with a big belly. He died on a bench because of hunger, cold and lack of a proper life. When he woke up again, he was reborn in the body of an eighteen-year-old girl who had just finished the college entrance examination. After a life difference of thirty years, how did this middle-aged man face it?