Hello.. Well it seems like you are too lost in your thought process because of which you are facing such symptoms... You just need somebody close to you to sit and listen to your feelings and emotions.... Don't bottle up your feelings.. Share it out.. thank you

Hi, from what you have described, you seem to be under some stress and are  reacting  badly to it.  This could be early depressive symptoms. If you find yourself more and more in the negative state, do consult a Psychiatrist. With some counseling you can have better coping strategies to handle  stress and get rid of negative thoughts. Concentrate on being positive and happy from within and do not base your happiness only on external achievements of yours. Practice breathing techniques or Yoga and eat healthy . Get adequate sleep . Hope this helps, All the Best!

May be loneliness is what bothering you. Are living alone here??!!