Failing is really that common because not all do starts on being a professional or veteran one but rather we do start on being a newbie. On the moment or time that you do find yourself having such plans on dealing up with this volatile and unpredictable space then you should be expecting that it wont really be that so simple and you will be able to encounter into the things that will really be that so hard on which it will be resulting into such frustration.
Failure is something that cannot be removed from our lives, in any case. Because every time we do something, the risk will always be there, including when trading. But the question is whether we will be defeated by that failure, or we can turn failure into success.
As you said, everyone who now gets a professional name is those who have also gone through the beginner stage, but time can bring them or in other words they managed to go through a process that was not easy at all.
We also usually talk about or see people when they are successful, we will ask what their key to success is, we never ask how many times they have failed. Isn't that right?