Holding is for sure the best bet when it comes to crypto. Like others said, you really just never know what the price may do in just a matter of a few hours or even minutes. Never panic sale like so many do, instead take advantage and invest more in the dip! Tell 'em slim! haha
You will never know, it's almost like gumbling. First You need to study charts, the altcoin chart and the botcoin chart.... then see if there is any news, and predect the bitcoin price.............. as i said; gumbling!!!!