Is the reward for reflecting on the Quran and the adhkar (remembrances) of prayer counted despite the inability to concentrate due to sadness or anger, knowing that reflection occurs during times when one's psychological state is good?

Prayer is one of the greatest dispellers of worry and uncoverers of grief. Indeed, when an matter distressed the Prophet (peace be upon him), he would resort to prayer. You must make prayer, with its humility and tranquility, your refuge and sanctuary. The more you humble yourself, find tranquility, and reflect in prayer, the greater your reward will be, and sorrow, distress, and anger will depart from you. And Allah does not let the reward of those who do good go to waste. If an overwhelming psychological illness prevents you from reflecting, Allah will record for you the reward of your reflection as if you were healthy. You only gain from your prayer what you comprehend from it. So strive to perfect your prayer; for Allah does not let the reward of those who do good go to waste. If Satan reminds you of anything that causes your sorrow or anger, repel it by immersing yourself in the meaning of what you are reciting and reflecting on what you are reading, asking Allah for His grace and attaching your heart solely to Him.