I am fussy, about my diet and straining my voice. I know, sounds a bit over the top. But I'm not as bad as I used to be. These days I don't drink alcohol for five days before a show - very dehydrating for the vocal cords, and all that acid reflux. I used to ban it for a fortnight. Nightmare.
The songs certainly have not made my fortune, but I am still grateful for the royalties when they come in.
I don't try and write strong female characters or strong male characters, I just try and write, hopefully, strong characters and sometimes they happen to be female.