What advice and prayers can be offered to a 24-year-old engineering graduate who has not yet found a job, which has led to his discouragement and wasted time?

Frustration and despair are not characteristics of a believer, for Allah Almighty says: "Indeed, no one despairs of relief from Allah except the disbelieving people," and "And who despairs of the mercy of his Lord except those astray?" A believer knows that after hardship comes ease, and that Allah alternates days among people, and this might be a trial. He should review himself and repent to Allah, for no punishment descends except due to a sin, and none is lifted except through repentance.