Bad investing thinking I'm 100% guilty of:

"It’s so cheap -- it can’t go lower." 
$GME

"It’s so expensive -- it can’t go any higher."
$SHOP, $ZM

"When it rebounds to my purchase price, I’ll sell."
$IMAX, $UA, $PRAA

"I'm too late -- I missed it"
$AMZN in 2009
$V in 2012