How does a person walk the path of God with strength and steadfastness, especially if he is in his twenties, does not memorize the Qur’an or Sunnah, is not very devout, has responsibilities such as work, study, and caring for parents, and wishes to achieve his spiritual and worldly goals despite limited time?

The Muslim's function is to worship God alone. Therefore, one must utilize time in ways that please God by setting a strict schedule to use free time for beneficial knowledge and righteous deeds. Begin by learning what is obligatory, then progress in knowledge by adhering to a trustworthy shaykh, or by following courses and scientific recordings of trustworthy scholars. One must also seek reward in honoring parents, accompanying the righteous, and avoiding idlers and wasting time on trivial matters and sins.