You need to learn how to manage
your instincts for MATERIAL and SOCIAL SECURITY,
your needs for POSSESSIONS and HONOR,
and your fears of DEPRIVATION and FAILURE.
Aside from prayer, the way to overcome this is to do the opposite:
To show your appreciation for others,
to celebrate their joys and successes with them,
and to share more of what you have with others.
Is this something that you think you can begin working on?
Is there someone in particular for whom you can start doing the above?