Is the hardness of heart and loss of feelings that the questioner is experiencing due to life pressures and past events he has gone through, or due to shortcomings in acts of worship, and is there hope of regaining his former vitality and joy?

What we advise you to do is to preserve the obligatory prayers, including the Fajr prayer, and to take the means to wake up for it, and the means for the heart's life, such as: visiting the sick, following جنائز (funerals), contemplating death, contemplating Allah's names and attributes, accompanying righteous people, frequently reciting the Qur'an with reflection, and striving in supplication for the heart's rectification; for indeed, it is between two fingers of the Most Merciful, He turns it as He wills. You can also consult a psychiatrist or the counseling section of the website.