i think experienced had a very big role on decision making, is this a reason why most of the newbie loss is it because they don't have enough of experience?
Of a truth, it does. I got to understand why employers would always have "years of experience" included in job requirements as part of their criteria for new intakes. We may think it's high-handedness to do that but it's not. There's a part for experience in anything we do in life. Those with experience often go far ahead of their counterparts without experience.
On the part of failure and success, we learn from failure than we can do from successful. Failure gets us into adjusting our strategies and trading plan whereas success gets us excited and ego bloated. With it we conclude that we've accomplished and "arrived".