He attributes his success to his efforts.

He is making an effort every day to pass the exam.

He is endeavoring every day to pass the exam.

His business was a great success.

He succeeded in the exam.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He relies on his own abilities.

He relies on his own abilities.

He is suffering from alcohol dependence and is undergoing treatment.

The basis of this theory is based on experimental results.