The Messenger of Allah (ﷺ) used to say:

اَللَّهُمَّ أَصْلِحْ لِي دِينِيَ الَّذِي هُوَ عِصْمَةُ أَمْرِي، وَأَصْلِحْ لِي دُنْيَايَ الَّتِي فِيهَا مَعَاشِي، وَأَصْلِحْ لِي آخِرَتِي الَّتِي فِيهَا مَعَادِي، وَاجْعَلِ الْحَيَاةَ زِيَادَةً لِي فِي كُلِّ خَيْرٍ، وَاجْعَلِ الْمَوْتَ رَاحَةً لِي مِنْ كُلِّ شَرٍّ

Allaahumma aslih lee deeni al-ladhi huwa ‛is-matu amree, Wa aslih lee dun-yaaial-lati feeha ma‛aashee, Wa aslih lee aakhiratee al-lati feeha ma‛aadee, Waj-‛alil hayaata ziyaadatan lee fee kulli khayrin waj-'alil-mawta raahatan lee min kulli sharrin

O Allah perfect for me my religion on which success of all my affairs depends, And perfect my worldly affairs on which my livelihood depends, And perfect my hereafter to which I will return, And make in life for me an increase of all good, And make death for me a comfort from all evil.

Reference: Muslim: 2720