Dear Sir I can imagine it must be quite difficult for you. Feeling sad,lack of interest in things that you liked doing before,feeling hopeless,lack of energy and focus,disturbed sleep and appetite are all symptoms of depression. Depression is a treatable medical condition and can be effectively treated with medications and psychological therapy.Please see a psychiatrist for a detailed evaluation which will include a detailed physical examination and blood test to rule out any physical cause for your symptoms like thyroid abnormality. Please seek professional help. Thanks Regards Dr Ankita Mishra MRCPsych MD DPM Mumbai

The above mentioned complaints are common symptoms for depression, which can be treated woth proper medication. Kindly visit a psychiatrist and dont delay it any further