If you want to go in one direction, the best route may involve going in another. This is the concept of 'obliquity': paradoxical as it sounds, many goals are more likely to be achieved when pursued indirectly. Whether overcoming geographical obstacles, winning decisive battles or meeting sales targets, history shows that oblique approaches are the most successful, especially in difficult terrain.
Obliquity is necessary because we live in a world of uncertainty and complexity; the problems we encounter aren't always clear - and we often can't pinpoint what our goals are anyway; circumstances change; people change - and are infuriatingly hard to predict; and direct approaches are often arrogant and unimaginative.