“You can’t ever get everything you want. It is impossible. Luckily, there is another option: You can learn to control your mind, to step outside of this endless cycle of desire and aversion. You can learn not to want what you want, to recognize desires but not be controlled by them.”
~Bhante H Gunaratana
The Budding Buddhist 
My guru talked about “desire” and the accompanying “fear” of losing it once obtained. That, and my experience of trying to get rid of things I no longer wanted, has more or less cured me.