Maulana Ashraf Ali Thanvi (may Allah Ta’ala have mercy on him) said,

“The crux of Tasawwuf is that when a person is finding it difficult to perform a commandment of Shariah because of a lack of motivation, he should fight that lack of motivation to obey that commandment, and when a person is finding it difficult to resist temptations to commit a sin because of lack of motivation, then he should fight that lack of motivation to refrain from that sin. This is what gives rise to a closer relationship with Allah, this is what makes that relationship stronger, and this is what sustains it.”