Delayed my Work and Delayed My Future.

Hello Doctor, I am a 25-year-old male currently preparing for job interviews while also working in a shift from 12:00 PM to 9:30 PM. I am also dealing with financial stress and family responsibilities. For the past few weeks, I have been facing difficulty with both focus and sleep. I find it hard to concentrate for long periods, get distracted easily, and often feel mentally fatigued. My sleep is also inconsistent — sometimes I take a long time to fall asleep, and other times I wake up feeling unrefreshed. Because of my work shift, my routine is slightly irregular, and I am not sure if that is contributing to the problem. I wanted to understand: 1. Whether this could be due to stress, anxiety, or my work schedule 2. If I should get any tests done 3. Whether medication is required or if lifestyle changes would be enough 4. How I can improve both focus and sleep naturally with my current schedule I do not have any known major medical conditions. Thank you.