I invest in companies with strong fundamentals which are also significantly undervalued, presenting a good margin of safety. I write extensively about my ideas and investment strategies on my blog at Soberstocks.com
Bulls & bears make money, it's the pigs that get slaughtered. Don't be a pig.
In a bull market your game is to buy & hold until you believe that the bull market is near it's end. Then get out of all stocks, get out for keeps!!