A few years ago I wrote an article that I called "Survival of the Fittest". You can read the article here.
All the advice in the article holds true today, perhaps more so than ever. Success in today's business climate depends on what we think and do, not some random vagaries of the market. Don't blame things outside your control. Do what you can control to the best of your abilities, surround yourself with the best people, and unleash the creativity of your employees. Then stand back and watch good things happen.