My biggest mistake was too "greedy".  I won 9.6K trading HK ...

My biggest mistake was too "greedy". I won 9.6K trading HK index in 45 minutes. But because of greed, I believed I can make another 9k ; in the end, I lost 12k on the next trading day. So remember, always control your emotions, and don't be greedy.
见好就收。