Islam - Hard work, striving and accomplishment: Imam Ali (as)

The best striving is that which is accompanied by [divinely granted] success.

You must be diligent even if you are not assisted by [good] fortune.

One who is diligent becomes fortunate.

Striving has been linked to achievement.

One whose diligence becomes weaker, his opponent gets stronger.

Whoever embarks upon [any action with] diligence, over powers his opponent.

One who employs diligence arrives at his goal.

One who strives with all his effort arrives at the core of his desired objective.

Stiving is useless without accomplishement.

Striving is useless without [divinely given] success.
 
Rolling up one's clothes [in preparation] for serious work is from [one's] good fortune.

Seek and you shall find.

It is upon you to strive but it is not upon you to succeed.

Never will your striving for that which improves you and earns divine reward be wasted.

One who hastens his pace arrives at the place of rest [and repose].

One whose efforts are good, his place in the Hereafter will be good.

Strive to free your necks [from the shackles of this world] before the doors of ransom are shut.

Whoever hastens to the people with that which they dislike, they will speak about him that which they do not know.

Many a person strives in that which is harmful for him.

Many a person is awake so that another can sleep.

Many a person strives for one who is seated [doing nothing].