There may be many situational reasons for the emotional imbalances that you are going through.  Consult a Counselling Psychologist for help.

Depression and anxiety can make a person sensitive and irritable on things which they used to tolerate before. Lack of awareness of how to cope with stress can lead to many of the problems u had mentioned. Ur problems can be easily treated with counselling and if needed medications. Don't let ur problems affect ur personal or professional life. U need to consult a Psychiatrist. U can also consult me online directly through the Practo chat option. Best wishes for speedy recovery!!