This is true that a trader has to go through a lot of depression and tensions sometimes doing all the study and analysis , learning new things , watching news etc and then there are times when a trader performs some bad trades and looses a lot of money.
This leads to a lot of depression and to overcome this they should take a break and some time off from trading and try to rejuvenate and spend time with friends and family and when they gain some energy and have peace of mind they can start again.