The individual investor should act consistently as an investor and not as a speculator. This means that he should be able to justify every purchase he makes and each price he pays by impersonal, objective reasoning that satisfies him that he is getting more than his money's worth for his purchase.
We are sole responsible for every decision that we make. We must know the consequences of our decisions, hoping for the best and preparing for the failures before we run to it. And if we fail, we should not put the blame to others because to begin with it is our choice.