If sth very helpful existed, we wouldn't be here .. More seriously, everybody finds what suits him best in time, there are no fast solution to this condition and each case is a bit different. You have to notice what works for you. Trying to mask it or rather stay in silence as much as possible ? Mine seems to calm down around 25% when I lay down so when it bothers me I lay for a while..which often finishes with falling asleep even if I'm not that tired. And I'm awfully happy I can write that - a few months back I thought having a nap was sth I would never experience again.
For the night I play Steve Roaches cds - same thing, they make me sleep full nights. Descret masking and journey in space feeling. All the birdies, waterfalls and other nature sounds not only don't work but just annoy me. Same with all the colourful noises. But others sleep with that fine. You have to find for yourself. When I want a break in hearing it, I'd go out. Then I hear it 90 % less so I can feel almost normal. At home I hear it over everything except shower.