Lets just point out on whats being mentioned on the article.
=Overtrading from being overly confident
=Inadequate capitalization
=Not adapting to market conditions
=Being motivated by greed
I highly agree with these points and one thing which is important to avoid is that on that #4
yet any actions driven or motivated by greed will really result into a disaster.
On that number 4, I think we should used our logical thinking here and not to be carried by our greed. Number 1 though, I must say that I'm guilty as well, being confident that I wouldn't lost in this market, so it's a hard lesson.
Number 2? I guess we can start with small capital and try to get it multiply over time. I believed most of us did that, We begin with small capital we earn here (sig campaigns, bounty hunting) and used that as a stepping stone. Then we trade our earnings, and make the best out of it.