Low energy levels, tiredness, low mood, not feeling like doing anything, hopelessness, etc can be symptoms of depression. It may worsen if not treated timely. It is like any other medical problem, and not due to personal weaknesses. Like
diabetes, hypertension can happen to anyone, even depression can happen to anyone. Like these conditions needs medication, even depression requires medication.
Next Steps
Kindly consult with a psychiatrist. You can ask a detailed query here on practo.
Health Tips
It is treatable.