Your proper history is to be required for that,It may  adjustment disorder.Need consultation to psychiatrist.

Dear Sir Difficulty in thinking , lack of focus, difficulty in reacting to an event, feeling numb can occur due to a lot of factors like ongoing stressor certain mental health problems like depression or anxiety. Please see a psychiatrist in person for a detailed evaluation to understand what is causing these symptoms. Treatment depends on the outcome of assessment and may consist of medication and psychological therapy. I am certain that you will feel better with right treatment and support. Since I practice in Mumbai feel free to contact me for an appointment or you can see another psychiatrist. Thanks Regards Dr Ankita Mishra MRCPsych MD DPM Mumbai

Take therapy Explain your concerns to a mental health professional Consult with me or any psychologist for therapy and counseling online or in person All the best