What is the way to return to religious observance and feel comfort and tranquility after being influenced by atheistic ideas and losing the desire to worship?

Begin by supplicating to Allah with sincere recourse to Him, so that He may deliver you from your current state. Sever all ties with atheists and associate with good companions. Strive against your soul in repelling doubts, sit with well-grounded scholars, and read beneficial books that refute atheists, such as "Physics and the Existence of the Creator" by Dr. Ja'far Sheikh Idris, "God Manifests in the Age of Science" by Dr. Al-Damardash Abd Al-Majeed Sarhan, "Islam Challenges" by Professor Wahiduddin Khan, and "A Struggle with Atheists to the Bone" by Sheikh Abd Al-Rahman Al-Midani. When doubts disappear, it becomes easy to return to observing prayers and acts of worship and to relish the sweetness of faith, for a good life is the fruit of righteous deeds.