I find getting over the neediness an issue at times also. I have manifested a couple of times. I literally TRICKED the universe into believing I was content without my desire by sending out a high vibration of joy through out the day. It took alot of energy for me to pull it off. I was very 'sneaky' and got away with out. I am trying to trick the universe one last time, then my desire will be mine.
Thats great, but I'm not so sure you actually tricked the Universe, I think instead you may have tricked yourself, thus creating the high vibrations of joy. The Universe picks up on our feelings, and if thats what you were truly feeling and putting out there, then thats what the Universe picked up on.
I think its great, I would do it. I have tried to do it, but the feelings inside me are still too strong to even trick myself.
But as Abraham says; "A belief is a thought you keep thinking", so as this is true, I will get there myself.
Keep at it sweetheart, the world is yours.
Peace and Love,