Apprenticed Investor: Don't Speak, Part 2

Last week, we reviewed five of the top 10 things investors say and do that ultimately undermine their investing success. This week, we continue the process. (For part 1 of the story, click here.)

If you have ever said -- or even thought -- any of the following, you need to re-examine your investing philosophy:

6. 'This stock looks cheap down here.'

Any time you hear this tidbit, you can bet that either 1) the stock just got killed because of some awful news, or 2) it's in the midst of a long and relentless downtrend. ...