Let me share this Hadith:
This world should not be the main concern of the Muslim. Worry about his provision should not find any room in his heart or mind, lest that make his sickness and his anxiety worse.
It was narrated that Anas (may Allaah be pleased with him) said: The Prophet (peace and blessings of Allaah be upon him) said: “Whoever is mainly concerned about the Hereafter, Allaah will make him feel independent of others and will make him focused and content, and his worldly affairs will fall into place. But whoever is mainly concerned with this world, Allaah will make him feel in constant need of others and will make him distracted and unfocused, and he will get nothing of this world except what is decreed for him.”
(Narrated by al-Tirmidhi, 2389; classed as saheeh by Shaykh al-Albaani in Saheeh al-Jaami’, 6510).
Here are a few words of wisdom from Manuscript Found in Accra:
Anxiety was born in the very same moment as mankind.And since we will never be able to master it,we will have to learn to live with it-just as we have to learn to live with the storm.
For those who cannot learn to do so,life will be a nightmare.
Therefore,although anxiety is part of life ,NEVER let it control.
It(Anxiety) will never disappear, but the great wisdom of life is to realize that we the masters of the things that try to enslave us.