Brief Answer:
There is need to manage stress by help of others.

Detailed Answer:
Hello,
Thanks for your query.
I appreciate your efforts for medical consultation in so much distress.

Important aspects of your query are:
•     21 year old female
•     Family history of Diabetes in father
•     Complaints of: Depression due to stressful past.

Depressive symptoms can occur due to several condition. Common are:
-Adjustment disorder: due to immediate stress in life
-Personality issues: Person lack coping skills to manage stress
-Major depressive disorder: It can occur without stress also. In this depressive symptoms are more severe.

Apart from that continuation of stress, vitamin deficiency, thyroid problem and substance abuse increases severity of depression.

It will be better if you write your problem in detail to understand it better.

Irrespective of cause following simple measures will help you:
-Ventilate your stress/feeling to some close family member or friend.
-Decrease worrying by keeping yourself busy and distracted from worrisome thoughts by talking to family members or watching T.V. or counting back (100 to 0).
-Healthy diet: Milk and fruits in diet.
-Daily morning walk
-Take proper sleep
-Involve yourself in some leisure activities.
-Breathing exercise, yoga and meditation (which you can learn from some expert in person)

I hope this information has been both informative and helpful for you. In case of any doubt, I will be available for follow ups.

Wish you good health.
Regards,

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