If you are having a sinking feeling in your throat, it shows that you are suffering from anxiety disorder. It is a common type of mental illness and can affect anyone. Firstly you should remove all irrational fears and unrealistic worries about a thing, that make you feel sinking in your throat. You should try to be courageous and composed. You should not hold onto your fears over time as it may turn your problem into an acute one. You should also consider talking to your family and friends about it.