why not show that you need silence... I am not sure that one finger in your ear portrays that...
instead of a self portrait why not cast your shadow of you holding both hands over your ears while standing over a radio on the pavement? it would still include your self... but in an inpersonal way
i thought of this lady while reading your post
http://www.vivianmaier.com/
Oh thanks! bookmarked! source of ideas, great!
I'm limited with the time available and places I can go to shoot these days. I work full time, have 2 children (1.5 and 3 years old) and just small amount of time on weekends when I can take pictures, in home, while my children sleeping

Good thing is that I have a nice empty room for self portraits.
I'm also not that creative to have bunch of ideas right away...but as I said I decided to take selfies often to work on my creativity and to became more comfortable in front of the camera.
I'll definitely try your suggestion with shadow but slightly adjusted according to my limitations. Instead of pavement it could be the room, instead of radio... omg I don't have a radio, nor CD player!

got to find some old radio somewhere...
I have, in my house, a guitar, tam tam drum, some fifes. Those present sounds that are pleasing to me so I have to think and do a lot.
This all is sort of a big challenge for me and thank you for giving me ideas! It's a lot easier if someone else is the subject.