Du'a to deal with distress and heaviness

اللَّهُمَّ رَحْمَتَكَ أَرْجُو فَلَا تَكِلْنِي إِلَى نَفْسِي طَرْفَةَ عَيْنٍ، وَأَصْلِحْ لِي شَأْنِي كُلَّهُ، لَا إِلَهَ إِلَّا أَنْتَ

Allahumma rahmataka arju, fala takilni ila nafsi tarfata 'aynin, wa aslih li sha'ni kullahu, la ilaha illa Anta.

O Allah, I hope for Your mercy. Do not leave me to myself even for the blinking of an eye (i.e. a moment). Correct all of my affairs for me. There is none worthy of worship but You.

Sunan Abī Dāwūd 5090 (second part)