I disagree with this statement. There are three reasons from my opinion why successful should not comes from taking risk. First of all, taking risk is about insecure, which means you can't be sure with things you have decided to do or invested. Besides, taking risks is so stressful, it destroys your mental health. It can mainly affect to your personality
Finally, successful should rather comes from self-motivation because you know how much you put effort on it, so that you can predict the result whether you will success or not. For conclusion, taking risks could not help us to be success while motivating ourselves can lead us to a successful.