Is the voice that the young man heard after his supplication and recitation of Surat Al-Ankabut, which said to him: "O My servant, do not grieve," a message from Allah or merely an imagination, and what are the pieces of advice that will help him maintain his prayers and draw closer to Allah?

You must strive against your soul to obey Allah Almighty, and you will reach your desired state of uprightness through persistence and diligence. Continue reading the Quran, and repent to Allah, especially for neglecting some prayers, for abandoning a single prayer is a greater sin than adultery, theft, wine consumption, and killing a soul. Safeguard the obligatory prayers, and increase in supererogatory prayers, remembrance (dhikr), and supplication (du'a). Befriend righteous people who will help you in your obedience to Allah. What crosses your mind might be a thought from yourself, assisting you in obeying Allah.