As it has mention in the Holy Quran
اَلا بذِكرِ الله تَطمَئِنُ القلوب
Lo! Remembrance of Allah (swt ) gives peace and tranquility to hearts.
But this remembrance should not be just by tongue rather it should be as if that a person feels the presence of Allah in all aspects of his life. There are many Zikr and Duas which can cause peace and tranquility. Please recite this zikr after your Salat 70 times:
سبحان الله و الحمد الله و لا اله الا الله و الله اكبر
ما شاءَ الله لا حَولَ وَ لا قوَّةَ إلّا باللهِ العَلِیِّ العَظیم
Continue your salat on its actual time Inshallah soon you will get recovery.