Greed

As humans it is our tendency to be greedy. Personally speaking I always keep praying to God for one thing and promising him that if I get it, I will never ask him for anything else. But as a human, I just can't help it.
There was one thing for a long time that I wanted really really badly and I kept praying to God for it (and telling him that if he gave it to me, I will never ever ask for anything from him ever again), then I got angry with God and stopped asking for it but still in a teeny tiny corner of my heart I always kept wanting it.
One day suddenly when I was least expecting it, that thing came walking to me. That was probably the happiest day of my life. I even told God Thank you and told him I will keep my promise and never ask for anything more from him. Now being a human I want more. I want the thing to stay with me and be mine forever and ever but there are certain hurdles in its way.
Now I want to pray to God and ask him to make those hurdles move out of the way and make my life smooth and peaceful, but I don't know how to do that.
I wish I don't have to tell God out loud what I want, I hope he just lingers in my heart and finds it out on his own.
Greedy me... :)