The prevailing view has been that the market will earn a high rate of return if the holding period is long enough, but entry point is what really matters.
Seth KlarmanShort-term performance envy causes many of the shortcomings that lock most investors into a perpetual cycle of underachievement. Watch your competitors not out of jealousy but out of respect and focus your efforts not on replicating others' portfolios but on looking for opportunities where they are not. The only way for investors to significantly outperform is to periodically stand far apart from the crowd, something few are willing, or able, to do.
Seth Klarman