Hello Friend, Good that you are seeking a help here. Anger, frustration, irritation are expression of your stress. Stress doesn't need to  an emotional issue, it can be also caused by body conditions like excess heat in body, menstrual issues, acidity, type of food, lifestyle etc.. So it's better to analyze holistically to identify the reason for such stress. You may need a guidance of counseling support to assess your suitation and get the root cause identified.

Feeling low, having crying spells, sleep and appetite disturbances, and difficulty in concentration and attention are some of the signs of Depression. Consult a Psychiatrist for a detailed assessment. It is likely with medication and counseling the symptoms will improve. If you are feeling suicidal or hopeless consult a Psychiatrist immediately.