Hadith 16:77
'A'ishah (RAA) narrated that the Messenger of Allah (ﷺ) said:
“Pessimism is part of bad character.” Related by Ahmad with a weak chain of narrators.
وَعَنْ عَائِشَةَ -رَضِيَ اَللَّهُ عَنْهَا- قَالَتْ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -قَالَ: { اَلشُّؤْمُ: سُوءُ اَلْخُلُقِ } أَخْرَجَهُ أَحْمَدُ وَفِي إِسْنَادِهِ ضَعْفٌ