My body to paining what should I do?please guide...

What is the treatment of fatigue,and whole body pain?
Eat foods rich in beneficial nutrients and keep away from unhealthy food eating
Avoid tension and stress
take iron and folic acid once daily
take Omega 3 tablets daily
take multivitamin pills once a day such as supradyn
Organization of sleeping hours
Work half an hour of energizing exercise daily
What are the causes of fatigue,and whole body pain
Excessive fatigue during the day
Depression
extreme sadness
Lazy thyroid
Sleep disorders
Anemia
Vitamin deficiency
What tests should you do ?
medical history
physical exam
mental state exam
CBC
thyroid function test
blood pressure test