Anxiety and depre. About his health!

I understand your concern. Your father seems to be suffering from depressive symptoms including low mood, irritability, anxiety and low self confidence. More clarity is needed regarding his problem. Information regarding sleep, hunger and concentration at whatever he does would be more helpful to decide on severity of the condition. However it is easily manageable with appropriate treatment, so that dysfunction due to the same can be reduced and his quality of life will improve. Some counselling sessions along with medical help might be useful for him. I would also be more than happy to help you with that if you are looking for online assistance. Discussions will be held confidential. You can directly consult with me through Practo as needed. Online chat consultation is available.