Dear Sasha,
I am a young woman addicted to masturbation since late childhood.
I sometimes masturbate out of real horniness (good), but the strong urges I feel between my legs are always related to feelings of guilt and stress (very, very bad). It's quite different from actual horniness, and often I won't even think about sex but about plans for the future or whatever is stressing me.
There's no correlation between my real sex life and this. My main concerns are that a) it's very time-consuming when I'm most pressed for time, and b) I might get caught and freak someone out. (I'm so ashamed.)