#Patience is the key to success
be panic ,never sell in loss if coin be already dump
wait for right time to buy.
when you feel good.
't fall in love with one coin.
't worry and cry if market will be sudden dump due to bad news.
't enter in the peak value of coin if you have no idea about the achieved target.
't forget stop-loss on support if coin has multiple supports.
't invest in dead coin.
at your own risk.
last dont regret if you sell the coin and coin goes up ,profit is always profit ,because in both situation you will regret if coin goes down you will say why i didnt sell and if coin goes up you will say shit ,why i need wait I sell in low price but the thing is profit is always better ,profit is profit ,always set what percentage you want from the particular coin and sell it .That set.Never regret next trade is waiting for you.
all this rules are good but i think you forget one of the most intortant rule in crypto:Never but never don't invest more that you are affordable to lose.