Is a person held accountable, Islamically, for their inner feeling of dissatisfaction with life and circumstances if they do not express it verbally?

A servant is not held accountable for the anguish or dislike he feels in his heart concerning the hardships that befall him. This does not contradict contentment with the divine decree (Qada'). Ibn al-Qayyim said: "It is not a condition of contentment (rida) that one does not feel pain or dislike for adversities, but rather that one does not object to the decree nor become discontent with it." Scholars have differed regarding the ruling on contentment with the divine decree. The majority held it to be recommended, while others deemed it obligatory. Ibn Taymiyyah mentioned that the command for contentment did not come as explicitly as the command for patience (sabr). There is a distinction between contentment with what has been decreed (al-maqdi) and contentment with the divine decree itself (al-qada'). Contentment with the divine decree (al-qada') is obligatory by consensus. However, contentment with what has been decreed (al-maqdi) is not obligatory. Thus, feeling pain from an illness is not considered a lack of contentment with the divine decree but rather a lack of contentment with what has been decreed. The Sharia does not burden anyone with what is not in their nature.