This is both good and bad advice.
Good in that life is full of knowledge and fun that you will never experience until you've driven headfirst into something you know nothing about.
Bad in that recklessly dashing into lands unknown is a wonderful way to learn, and also be seriously damaged in some way.
Going back to the car analogy, yes driving a vehicle is inherently dangerous. That's why there are rules and guidelines in place. Speeding can be fun sometimes, but you must understand the risk. Driving offroad is very enjoyable, but not all vehicles can do it safely and it is very difficult in most cases.
Know yourself, understand your limits, then you can push them as far as you want.