Cai Kangyong once said that when you were 15 years old, you felt that swimming was difficult. You gave up swimming. When you were 18 years old, you met someone you like and asked you to go swimming. You have to say, "I won't." When you were 18 years old, you felt that English was difficult. You gave up English. At the age of 28, you met a job that is very good and suitable for you but requires English. You have to say "I won't be yeah." When you come out, you have to pay back. If you are lazy in the early stage, you will have to spend several times more energy to make up for it later. What's more, you don't necessarily make up for it.
The most terrible thing in life is to live while regretting.