Trading can be really stressful and time demanding. Any minute you stay out of the system can cost you serious damage. I trade only when I have all the time to sit by the system.
Its more stressful if the market doesn't show you any significant gains but most of the time its only about losses.
That's how it feels to be a trader but we aren't the only people that feels this way, even the billionaires are also having those losses and stress.