The soul is never stagnant..

قال ابن القيم رحمة الله عليه

أعظم الأشياء ضررا على العبد بطالته وفراغه فإن النفس لا تقعد فارغة بل إن لم يشغلها بما ينفعها شغلته بما يضره ولا بد

طريق الهجرتين – ابن قيم الجوزية

Ibn al-Qayyim رحمة الله عليه said:

One of the most harmful things to a slave is being in a state of idleness and (wasting) his spare time. For the soul does not remain stagnant. If you do not occupy it with that which is beneficial, it will become occupied with that which is harmful, and there is no alternative.