Investor common mistakes | 3 common ones

What are the most common mistakes for a beginner to learn? After three years' experience, I would like to talk about three common mistakes. 

1. Be careful! Biggest risk to invest in risky biotech stocks; Need to learn psychology effects of investor, fear and greed. 
2. I chose to invest in the short term, so that there is no return after three years of hard work. 
3. Aim at long term, focus on analysis of long-term trend of equities. 
4. Focus on at least one equity, and then learn from the investment. Work on equity research hard, get all data and business analysis and then really learn how to analyze a business, small capital business is a good choice. 
5. Work on self-discipline, short term investor - need to read at least 50 books related to investing in equities. Start to read books early. 
6. It is better to start to read seekingAlpha.com articles as early as possible. No one is an expert; we all have to learn and be open to learning from experts. Reading is the most important job as an investor. 
7. Subscribe to SeekingAlpha.com premium service. 

3 common mistakes

1. Please consider subscription to premium service of seekingAlpha.com; Please seek analyst's advice in those articles as soon as possible. 
2. Please start to read a lot of books, and also start to learn from your own experience. 
3. Learn to measure the risk; Avoid biggest risk, such as purchase of biotech stocks.