"Never try to call a bottom in a stock. It can surprise you and go yet lower."
Yes, it can.
I try to overcome this by averaging in. I usually make 3 to 4 buys to get fully invested. I also find that it is not wise to make all my buys close together even though the stock looks incredibly cheap. Better to let some time go by than to keep throwing money at it.
Try looking at a monthly chart instead of a daily chart. It's pretty sobering sometimes.
same mistake here ... tried to call the bottom and I have bought at 14.02 last week ... it appears that this is constantly looking for lower lows. You also know that is time to get out when shorters show up ... ! Sold out today. I'll be watching ...