For example, some who want to quit smoking fail because they lack sufficient motivation.
فَذَاتَ مَرَّةٍ ،‏ قَالَ بِأَسَفٍ :‏ « اَلْإِرَادَةُ حَاضِرَةٌ عِنْدِي ،‏ وَأَمَّا أَنْ أَعْمَلَ ٱلْحُسْنَى فَلَا » .‏