Such changes cannot usually be made overnight, and stumbling during your first attempts should not be regarded as a failure.
تَأَمَّلْ فِي مِثَالِ كْوِيتْشِي ٱلَّذِي كَانَتْ لَدَيْهِ مُشْكِلَةُ صَرْفِ ٱلْكَثِيرِ مِنَ ٱلْوَقْتِ فِي ٱلتَّسْلِيَةِ .‏