Well the symptoms you have described suggest more towards a depressive disorder. Avoiding friends, staying alone,negative thoughts, thoughts of you hurting oneself, are all part of depression. Getting restless, acidity and being afraid are part of the comorbid anxiety symptoms  you have.

Based on the information that you have provided, you could be having some symptoms of a psychiatric disorder. Certain disorders like panic disorders can have symptoms of repeated attacks of panic and feeling an impending doom like sensation along with physical manifestations of anxiety. Generalized anxiety disorder can also have symptoms such as a free floating anxiety regarding all aspects of life such as health, finances, future, etc. When a person is depressed, he or she can experience negative thoughts, crying spells, mood changes, feeling on unhappiness and feeling of hopelessness and helplessness. Certain individuals can have simultaneously both features of anxiety and depression such as Mixed Anxiety Depressive disorder. Stress can affect mental health tremendously. Depression, Anxiety and Stress related disorders can have a neuro-chemical transmitter related imbalance as well in addition to psychological factors associated with its probable causation. As you mention that you have made certain changes to cope with the situation in your own way but you also mention that you are still experiencing symptoms despite making your individual efforts. A combination approach of medications plus psychotherapy focusing on your clinical condition after a detailed clinical evaluation can be helpful in holistic management of your symptoms.

your description points towards anxiety disorder along with depression, it occurs due to disturbance of chemical balance in our psychological or emotional system, as you written about unknown fear, exagerrated episodes of sadness. these all changes occurs due to hereditary effect, your behaviour to negative circumstances or due to both effect. in short it is very necessary to understand the problem i.e. why it happened to you? to get rid of this. http://srhomoeopathy.com/diseases/psychiatric-disease/

Hi, your description definitely points towards Anxiety disorder with Depression. You made certain lifestyle changes and gained control of some aspects of your life externally in the past one year. However, your internal thought process and coping mechanisms remained the same. I would urge you to consult a Psychiatrist for detailed evaluation. You will most likely benefit from some amount of medication as well as counseling. With counseling you can address the fears and triggers for your current emotional state. Also, you can learn simple techniques to overcome the negative thought process and draining emotions. You need to gain internal control of your emotions and become a strong person who can handle any situation . It is however commendable that your commitment to improving yourself has led you to actually make changes in your lifestyle. Do add Yoga, breathing techniques and healthy food and sleep habits too. Get your baseline investigations done like CBC, Thyroid function tests , FBS etc. Sometimes anaemia, hypo/hyperthyroidism and low/high blood sugar may be missed with the presenting symptoms of Anxiety or Depression. Hope this helps, All the Best!