Duas from Hisnul Muslim
131
اللَّهمَّ لا سَهْلَ إِلاَّ مَا جَعَلتَه ُُ سَهْلا، ً وَأَنْتَ تَجْعَلُ الحَزَنَ إِذَا شِئْتَ سَهْلا
‘O Allah, there is no ease except in that which You have made easy, and You make the difficulty, if You wish, easy.’
Allaahumma laa sahla 'illaa maal ja'altahu sahlan wa 'Anta taj'alul-hazna 'ithaa shi'ta sahlan.