You might be right about where the market is going-but you have no idea where it will go after that. Wall Street is motivated primarily by two emotions fear and greed. If you made money, you invested. If you lost money, you speculated. There are two times in a man's life when he should not speculate - when he can't afford it and when he can.
Human nature is always in conflict with successful investing.
Never check stock prices on Friday. It could spoil your weekend.