I'll always keep in mind the number 4. I would do stupid selling in my coin. I will hold it even for years. The only strategy I got is buy low sell high. If you want to gain do this and you will surely be rewarded
that is when a trader accidentally turn into investor 
trader must know he not enter or exit the market in wrong time. when your coin start to dump, you can get more by sell it when it just started dump and buyback at bottom