Sunday is a suitable day to plan coming week tasks, define priorities, review past week tasks to ensure they have been done.
I found a particular aspect of Arabic grammar difficult, so I spent 80,000 dirhams in order to become proficient in it.
If you live until the evening, then do not expect to live until the following morning. And if you live until the morning, then do not expect to see the evening. Take from your health for your sickness and from your life for your death.
The sign of repentance [is]: weeping at what has preceded, fear of falling into sin, leaving evil company and maintaining the company of the good.
Whoever makes the Hereafter his sole concern, then Allaah will be sufficient for him concerning his affairs and needs in the world