You can recite these Du`as to remove anxiety and stress:
1- Allahumma inni `abduka wa ibn `abdika wa ibn amatika, nasiyati bi yadika, madin fiyya hukmuka, `adlun fiyya qada’uka, as’aluka bi kulli ismin huwa laka sammayta bihi nafsaka aw anzaltahu fi kitabika aw `allamtahu ahadan min khalqika aw ista’tharta bihi fi `ilm il-ghaybi `andak an taj`ala Al-Qur’ana rabi` qalbi wa nur sadri wa jala’a huzni wa dhahaba hammi.
2- Allahumma rahmataka arju fa la takilni ila nafsi tarfat `ayn wa aslih li sha’ni kullahu la ilaha illa anta.
3- La ilaha ill-Allah Al-`Athim ul-Halim, La ilaha ill-Allah Rabb il-`arsh il-`athim, La ilaha ill-Allah Rabb is-samawati wa Rabb il-ard wa Rabb il-`arsh il-karim.