In short bursts all of this is tolerable and maybe even desirable to get the adrenaline flowing. But as a steady diet the stress can become detrimental -- not only to the business owner but to the business, as well.
I ask you to take a moment and breathe. Breathe in the fresh, free air that surrounds you. Do you envy people with more than you? Money cannot buy happiness and we often forget this living in such a materialistic society.