Remember Allah (SWT)
"So remember Me; I will remember you. And be grateful to Me and do not deny Me" - Quran [2:152]
In the Quran, Allah (SWT) says that he will remember us if we remember him. If you're ever feeling down, do some Adhkaar and remember Allah (SWT) and you'll notice a change insha'Allah.
Here is one of the many duaa you can make to remember Allah (SWT): Radhitu billahi Rabba, wa bil Islami Deena, wa Bimuhammadin Salla Allahu ‘Alayhi wa Sallam Nabiyyan wa Rasoola
رضيت بالله ربا وبالاسلام دينا وبمحمد صلى الله عليه وسلم نبيا ورسول
Translation: I’ve accepted Allah as my Lord and Islam as my way of life and Muhammad – may Allah’s peace & blessings be upon him as Allah’s Prophet and Messenger.