Wondering why you're no good at stock picking? The odds are stacked dramatically against you. Do yourself a favor and don't play this loser's game.
International stocks are solid investments worthy of your investing dollars, despite the fact that many US companies receive significant revenue from other countries. Allocating a reasonable portion of a public equity portfolio to international stocks adds valuable diversification.
The key to avoiding bad behavior in stock market downturns is an appropriate portfolio, an appropriate mental outlook, and a knowledge of market history.