We are graspers by nature, aren’t we?
I know it doesn’t take long for me to go from a sense of thankfulness at God’s bountiful blessing (being a steward) to a sense of entitlement/possession (being an owner).
As long as I think what the Lord graciously provides is mine, mine, mine, then it’s almost impossible to let it go.
When I can remember that everything-every. single. thing.-is from His hands, entrusted to mine for a season (maybe a lifetime but maybe not) then I can release it back to the One who gave it.
The more I practice the art and grace of letting go (even when it is so very hard!), the better I become at it. 
thelifeididntchoose 