I think that everyone has something about themselves that they feel is their weakness... their 'disability.' And I'm certain we all have one, because I think of a disability as being anything which undermines our belief and confidence in our own abilities.
WEAKNESSES, n.pl. Certain primal powers of Tyrant Woman wherewith she holds dominion over the male of her species, binding him to the service of her will and paralyzing his rebellious energies.
The egotistical ambition to always want to earn more money harms both the company and the individual himself. That is the biggest weakness of many managers - the financial crisis has proven this.