“The strong believer is better and more beloved to Allah than the weak one. Be keen to do what benefits you; rely on Allah and do not act as though you are powerless. When you have a problem, do not say: ‘If I had done such and such, the result would have been such and such’. Rather, you should say: ‘This was decreed by Allah, and Allah does what He wills.’ For saying ‘If’ opens the gate for Satan.” (M – from Abu Hurayrah).
الْمُؤْمِنُ الْقَوِيُّ خَيْرٌ وَأَحَبُّ إلي اللَّهِ من الْمُؤْمِنِ الضَّعِيفِ وفي كُلٍّ خَيْرٌ احْرِصْ على ما يَنْفَعُكَ وَاسْتَعِنْ بِاللَّهِ ولا تَعْجِزْ وَإِنْ أَصَابَكَ شَيْءٌ فلا تَقُلْ لو أَنِّي فَعَلْتُ كان كَذَا وَكَذَا وَلَكِنْ قُلْ قَدَرُ اللَّهِ وما شَاءَ فَعَلَ فإن لو تَفْتَحُ عَمَلَ الشَّيْطَانِ.