Martin Pring, in his 2009 book The All Season Investor, speaks to the patience and discipline necessary to succeed in the market “over the long run”.
…those that beat the market in one period have a less than even chance of doing it in the next. In reality, success in any venture is achieved at the margin. The tortoise approach implied by a gradual and continuous reallocation of assets will, in the long run, beat the promise of quick and easy profits.