Don't be Sad
Let us all seek the pleasure of Allah, Lord of all that exists. Let us stand before Him in worship, without associating any partners with Him; let us ask Him ardently and then wait patiently for the answer. For truly, He is sufficient for us; He is the One who Cures; He is the Creator and Provider; He alone brings to life and causes death.
('Our Lord.! Give us in this world that which is good and in the Hereafter that which is good, and save us from the torment of the Fire!) (Qur'an 2: 201)
"O' Allah, grant us health and well-being always, in this world and in the Hereafter"
"O' Allah, we ask you with the best of what your Messenger Muhammad asked, and we seek refuge in You from the worst of that which your Messenger Muhammad sought refuge from."
"O' Allah, we seek refuge in You from anxiety and grief we seek refuge in You from incapability and laziness; we seek refuge in You from miserliness and cowardliness; We seek refuge in You from the burden of debt and from the subjugation of man."