We implore Allah The Almighty to guide us to doing whatever pleases Him, to safeguard us against His wrath, and to rectify our intentions and offspring as well as ours. We supplicate Him to guide us to what is good for us and shield us against the evils within ourselves.
A Muslim who abstains from eating and drinking in Ramadan out of obedience to Allah The Exalted can definitely quit smoking, which neither nourishes one nor satisfies hunger. Failure is not the end of one's attempts, successful people are those who turn their failure into building blocks in the edifice of their success.