Avoid Common Investment Mistakes. Keep your emotions in check.

A recent report from Barclays Wealth identified four of the most common mistakes people make:

Focusing on single investments rather than the big picture.Consequence: not being appropriately diversified

Concentrating on a short-term time horizon. Consequence: mistiming the market

Taking more risks when comfortable and less risks when not.Consequence: buying high, selling low

Taking actions in hopes of gaining control. Consequence: high fees from trading too frequently

http://money.cnn.com/2012/06/25/investing/investment-mistakes-net-worth.moneymag/index.htm