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This includes :
Strict adherence to drug and diet regimen.
Examination of his/her urine for sugar,proteins,ketone bodies etc.
Home blood glucose monitoring.
Self administration of insulin...
OTHER USEFUL PRODUCTS
Maintenance of optimum body weight.
Attending periodic check-ups.
Recognition of symptoms associated with glycosuria and hypoglycemia.
Periodic check-up of blood pressure,vision,body weight,examination of feet for defective blood circulation by doppler ultrasound has important role to play in the management of diabetes.
For any more information on this,please consult your doctor or you may post the question in the comments section.