The Nafs (Self) is inclined towards evil even when the Shayaateen are chained:

بسم الله والحمد لله والصلاة والسلام على رسول الله ، وبعد

Allaah سبحانه وتعالى mentioned that the wife of the `Azeez (the minister) said to the king:

﴿إِنَّ النَّفْسَ لَأَمَّارَةٌ بِالسُّوءِ إِلَّا مَا رَحِمَ رَبِّي ۚ إِنَّ رَبِّي غَفُورٌ رَّحِيمٌ﴾

{Verily, the (human) self is inclined to evil, except when my Lord bestows His Mercy (upon whomever He wills)} [Surah Yusuf (12): 53]

And Allaah تعالى also said:

﴿وَأَمَّا مَنْ خَافَ مَقَامَ رَبِّهِ وَنَهَى النَّفْسَ عَنِ الْهَوَىٰ * فَإِنَّ الْجَنَّةَ هِيَ الْمَأْوَىٰ﴾

{But as for him who feared standing before his Lord, and restrained himself from impure evil desires, and lusts. Verily, Paradise will be his abode.} [Surah al-Naazi`aat (79): 40-41]