Surah Al-Baqarah (The Cow) ~ "And seek help through patience and prayer, and indeed, it is difficult except for the humbly submissive [to Allah].

مَنْ قَالَ حِينَ يَسْمَعُ النِّدَاء اللَّهُمَّ رَبَّ هَذِهِ الدَّعْوَةِ التَّامَّةِ وَالصَّلَاةِ الْقَائِمَةِ آتِ مُحَمَّدًا الْوَسِيلَةَ وَالْفَضِيلَةَ وَابْعَثْهُ مَقَامًا مَحْمُودًا الَّذِي وَعَدْتَهُ ، حَلَّتْ لَهُ شَفَاعَتِي يَوْمَ الْقِيَامَةِ

Be careful of (your duty to) Allah and seek means of nearness to Him and strive hard in His way that you may be successful.