[campfireveteran]

Self-sabotage and buddy-sabotage are pernicious flaws of attitude, belief and habits that exist in all people to varying degrees. This baggage is likely the greatest source of failure when fundamentals aren't an issue. I can't prove it, but this is my belief based on qualitative experience.

[chewz]

> Self-sabotage [..] is likely the greatest source of failure

People who got rich quickly often feel (deep down) that they do not deserve it and go to great lengths to self-destruct. Also just my private observations.

[naveensky]

I feel that probably they feel that they can repeat their past performance because it came easy to them, lose discipline around their gains and later when they can't repeat it, just lose all of it.