If you are still willing to study, take the self-study exam and the TV University exam. According to the present age of the landlord, 25 or 26 years old is not much older than the newly graduated college students. It is not too difficult to find a company to run business and do sales in the future. If you are lucky, you will become a business executive. Even if you can't, changing your career is better than being a security guard all your life.

If you don't want to study for a long time, but your cultural background is ok, you can consider studying computer programming and getting a qualification certificate, such as securities, insurance, futures and accounting. As long as you graduate from high school.

If you have a poor cultural background and don't want to learn, you can consider learning a simple and practical technology, such as electrician, electric welding, auto repair and chef. It is not bad to be a senior technician at first.