[Daring Scylla]

I pride myself on being an independent person, but I've had the trouble with separation of heart and head.
(I seem to be talking about this a lot, hurr.)
Look at the situation both with your logic and with your feelings. Consider which one you value more, or at least whether you act more on logic or on feelings. I act on a combination of the two, but I think logically about the outcome(s) and result before I perform any action.
figure out why you're feeling the way you do - you already know, obviously. So figure out from there what you want for yourself, the possible fixes to your neediness, and how these fixes will affect others
What I do - I contact the person who I'm feeling needy about. I just check up on them, let them know honestly about my feelings, and then bugger off. I try to find something else to focus on after satisfying my need to hear their voice - exercise, cooking, playing with a cat, working on a new art project. Find something that will interest you and focus on it - even simple meditation can help. Try to push all thoughts of the person out of your head so you're not constantly thinking about them.

TL;DR : Try to find something else to focus on for a while. a new song you love, an art project you've been meaning to finish, going out for a walk, playing with a cat, catching up with another friend. find something else that won't draw your attention to the subject of your neediness. You have to shut yourself down to them.

Good luck <3