Hello Friend, Good that you are seeking a help here. All your mentioned symptoms are sign of anxiety and stress in your mind. Just observe and analyze what's happening around you in the recent times. May be you are worrying too much about careers /job or relationship or family issues which in turn is affecting your thoughts process and creating negativity in your life, behaviors and day to day life. In parallel your lifestyle, food habbit also can play a role.
Be positive. This is surely an addressable problem, if you are willing to cooperate for few changes to overcome this problem.
Next Steps
Consult me directly or online through Practo app for further detailed evaluation of your symptoms and other behavioral changes to assess the reason or root cause behind this change. Then suitable solutions can be recommended. Be positive. You will be alright soon.