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 
Exactly and I can confirm that it works. I would like to share my experience in this regard, there was a time when I saw my 2 days old portfolio was showing the loss of around 35% but as I was having my limited study and detailed research with me, I stood with my investment and stopped tracking portfolio performance for a while. Then I think, within a month or so I not only covered that 35% loss but also made 12% profit of the same portfolio without changing anything in it. Thus patience is highly recommended if the investment is backed by the study and research.