Trading is hard because there's no way to know where the bottom is or where the top is on any given day or week. You just have to make good judgments and don't panic buy or panic sell. It's best to wait for a spike in price to sell and a dip in price to buy back.
Yes too much factors on trading that we must know about trading and i can take the essentials from your statement with don't panic buy or panic sell
we must control our selves when buy or sell positions
in my opinions we must know about human psychology in trading
"Don't panic buy or panic sell"
People aren't panic buying or panic selling for no apparent reason at all. There is always some reason behind doing something, and just the advice that you should neither panic buy or panic sell is mostly useless (if not outright harmful). You should understand what exactly makes you panic. If you are selling in panic, it is obvious that you shouldn't in the first place have bought so much at so high a price. The same basically pertains to panic buying as well, i.e. you should have bought earlier at a lower price and likely in greater amount
I've been trading for a whole year now, but still good losses may occur, specially in altcoin trading.