Abandoning things for Allah

Imaam Ibnul Qayyim wrote:

"Indeed a person will find difficulty in abandoning that which he is accustomed with, if he has abandoned these things for other than Allah. As for the individual who truly abandons these actions sincerely for Allah, he will only find difficulty initially. This is a test for him to see if he is sincere in his abandonment or not. If this individual is slightly patient with the initial difficulty, he will (soon) find pleasure and delight." [Al Fawaid pg. 156]