Index funds and ETFs alone won't guarantee investing success. You'll also need to steer clear of these three all-too-common indexing mistakes. Today's Stocks & Topics: Life Insurance, When to Sell, NLY - Annaly Capital Management Inc., ABX - Barrick Gold Corp., GDX - VanEck Vectors Gold Miners ETF, OXY - Occidental Petroleum Corp., 5 Things Rich People Confess To Sacrificing To Get Rich, NVDA - NVIDIA Corp., UVXY - ProShares Ultra VIX Short-Term Futures ETF.