Chronic fatigue

Lately, maybe because of my age, there haven't been any major changes in my daily life, but my body feels very heavy and exhausting.

I find it hard to get up every morning, and I feel my stamina has significantly decreased while working.

Do I need to take another dose of herbal medicine? I took Gongjindan earlier this year, and I didn't feel tired then... Should I take Gongjindan again?! My body feels weak, and everything feels bothersome and I lack motivation.