Everyone has hobby to which you must be in great awareness by yourself. It is all right that you have a hobby of any kind but you must control yourself not falling too deep into your hobby, a wrong one of which may hurt your life to a great extent.
For example, if a young man spends all his time on computer, day and night, neglecting other things he should have to do. This is not good. He wastes his life on things which do not bring him benefit today and future. He will have a life of failure.
Many Chinese, especial house wives, addicted to playing mahjong day and night. They think to play mahjong is their job and finally they destroy their health very seriously because of their too long time in their seats.
For old people, to fall deeply into their hobbies may not be too serious. It is because they have time in the first place and besides they have financial abilities to afford their hobbies.
But, for young people, to addict into hobby too deeply is very dangerous. He must know how to control his hobby in some limit, otherwise, hobby itself will hurt him in many ways, in his study, work, and home relationship and so on. Young people must realize that time once gone is gone forever. They have only one period of youth in their life. Youth never come twice.