to remove the  panic = buy the dip and u will never panic
to remove the fear = invest what u can affort to loose
to echap to the greed = my strategy is to devise my trading for 1 coin to 2 part , for exemple i bought BAT with 0.02 bitcoin when the price rise i sell 0.01 and i keep 0.01 for long term because i think is a good project ; if price goes down i will re buy with the 0.01 more BAT if the price go higher i have always 0.01
when u invest in a coin make amount to a long term and amount to short term trading
sorry for my bad english and good luck