In the name of Allah, Most Gracious, Most Merciful.
On a green island, a cow lived in solitude. She grazed until nightfall and thus fattened up every day. At night, no longer seeing the grass, she worried about what she was going to eat the next day and this worry made her as thin as a feather. At dawn, the prairie became green with the sunlight and the cow started grazing again with a bovine appetite until sunset. The cow once again had became fat and full of strength. At nightfall, not seeing the prairie, she began to cry and lose weight once again.
Time would pass but it never occurred to the cow’s mind that the prairie was not decreasing and that there was little reason to worry in this manner.
Your ego is like the cow and the island is the universe. The fear of tomorrow makes the cow lean. Do not worry for the future. Better to look at the present. You have been eating for years and the gifts and provisions from Allah have nevertheless never diminished.