What is the remedy for overcoming laziness in worship? I struggle with spiritual lethargy and would like to know how to deal with it.

You must remain mindful of Allah Almighty. Whenever you distance yourself from sins and neglecting your duties towards Allah, He will grant you spiritual vitality and draw you close to Him. Allah Almighty says, “And whoever is conscious of Allah - He will make for him of his matter ease” (Quran, 65:4).

Avoid procrastinating or postponing what need to be done, and do not wait for tomorrow to follow through on the good you truly want to do for procrastination is the work of the devil.  If you truly wish to make positive changes, start today without delay. Let the following supplication be your guide: “O Allah, I seek Your protection from incapacity and laziness and from cowardice, miserliness, and decrepitude. I seek Your protection from the torture of the grave, and I seek refuge in You from the trials of this life and of death” (recorded by Bukhari in his Sahih).