That constant ringing in your ears. Maybe it's a "hiss" or "woosh" sound. It's called Tinnitus. Millions of people suffer from this condition in varying degrees, including yours truly. Working around loud equipment, military service, playing rock & roll...there are countless ways people have come to have this constant noise inside their heads. Several rock stars, including The Who's Pete Townshend and AC/DC's Brian Johnson have had to alter their careers drastically because of Tinnitus and other hearing issues. Chances are you're not going to front a rock & roll band before a sold-out stadium anytime soon, but you need some relief just as badly.
As I was reading through Reddit.com, I saw this video and I tried the method (if you have fingers and a head, you can do it anytime, anywhere). It worked! Amazing! Watch the video, try it yourself and then leave a comment and let me know how it worked for you. Hopefully, you'll be hearing NOTHING in no time!