Be patient and do your hobbies instead of watching the chart. It will drive you crazier. Looking at the chart will make you less patient and you can sell your coin at anytime. Therefore, if your coins go down, do not worry, do what you want to do except trading and come back when the price is more stable 
Yeah so true. I watch the exchange every now and then and when I see my coins that aren't doing well I just shrug off and I just think that maybe this not the day. Instead I divert my attention into something. Like if you look everytime in exchange you will be dissapointed if things don't go well and as your emotions and thoughts will be on trouble as a result you can have some decisions that aren't necessary.