It's all about the risk
An important aspect of risk, is manageing your risk. It is unwise to set off on a risky adventure without weighing the ROI. Just as when banks loan money they expect a higher ROI when the risk is greater. This does not mean that a risky measure that is forseen to have a great ROI is worth the investment. Each investment of time and money must be balanced with your goals and situation.
There is no doubt that taking risks is a must in life, knowing which risks to take and when to take them sets apart those who will succeed and those who will not.