Persistence Beats Technique Every Time

The reason that persistence is so powerful lies in the principle of exponential growth, which basically states that the bigger something is, the faster it grows.
This principle is especially visible when applied to the profitability of entrepreneurial ventures.
In most startups, a massive amount of effort is needed at the beginning while almost no results are showing. As time goes on, the amount of effort needed to maintain the business decreases while profits increase.
Someone who is impatient will quit at about the red line, before any substantive results occur. In their eyes, they had just wasted several months of work. If they had just stuck it out, they would have begun to reap what they had sewn. Instead, they start all over again at the beginning on a new project with an entirely new exponential growth curve.

Source: http://geniustypes.com