Actually in reality most of people who fear to lose will not learn because they're scared to take a risk. When you're fear to lose your money, you will be very careful and you wouldn't leave your comfort zone. Just like someone who's start a business, there's no business will always make money constantly everyday.
This is very well said. If you are afraid to step out of your comfort zone, nothing will happen. Take the risk or miss the opportunity. That's it! Famous businesses won't be known by today if the owners of it let their fears govern.
Life is a gamble, so let's play it well and wisely!