I completely agree with your opinion that successful people always take risk to achieve their goals, but it is important to understand the complexity of relationship between risk and success. Risk can act as a double-edged sword, capable to leading to success if used wisely, on the other hand taking risk without using adequate risk management strategies, can also result in disaster. There is no doubt that Bitcoin has created many millionaires who took calculated risk and made timely investment decision to buy and hold and sell it at the right time. However, making decision to invest in any asset including Bitcoin should be done after due diligence, keeping in view individual's financial situation and risk tolerance level.