By your stumbling the world is perfected

This is stated by Sri Aurobindo. In complex manner he desired to understand the crux of the statement. A famous dialogue says no nation is perfect but it is always on the path of perfection and it's their citizens who actually decides the destiny of specific nations similarly it limits to World too. 

When you are endeavouring for the goals of your life that acts like bricks towards concreting the world with some more miraculous discoveries or inventions. Your deeds are actually building the destiny of the planet you are surviving at. This is also eternal truth that if a person initiates some profile, he/she has to taste the sourness of failures. And with all failures, we learn many things the most important learning is, not to follow at least such particular path as it will never results to our goal. This statement of Sri Aurobindo simply emphasizes that we should keep on trying because our set backs are also significantly contributing some way or other way. 

Every attempt always earn some lessons and that are utmost for the growth of our surroundings. First mutiny against British ie 1858 first struggle of independence was complete failure yet had ignited that freedom spark nation wise. Fluctuations are the sign of moving because straight lines are usually marked as a sign of stagnation. 

A perfect illustration accounts that a squirrel who contributed in making the Ram Setu even her contribution was very very small and not a successful deed yet squirrel today is counted as a purest disciple of Lord Rama.

So always remember your trying to accomplish your aim is the most crucial thing, your efforts, your sincerity and dedication matters. Consequences are the utmost last step to achieve. Likewise in mathematical equations always step wise marking is done and only minimal marks are deducted if exact answer is not matching. 

As a social responsible citizen, it's our duty to make failure so common that no one fears to face set backs. Only reason for not trying new task is failure phobia. But making realise your surroundings that your stumblings are as necessary as your smoothness. 

Perseverance and consistency are the true definition of excellence and success is a journey not a destination which consists of stumblings and risings simultaneously.