Can you tell me a dua to recite for restlessness?

Walaikum assalam wa rahmatullah,

I pray that this finds you well, and in the best of health and spirits. May Allah grant you all good and success in this life and the next.

There are a number of things the scholars suggest:

(1) In times of difficulty, be especially sure to steadfastly perform your five daily prayers. Strive, with this to perform the sunna prayers--especially the confirmed sunnas--associated with them. The Messenger of Allah (peace and blessings be upon him) told us, in many hadiths, that ritual prayer is the very best of outward spiritual works.

(2) After each obligatory prayer, turn to Allah in supplication. Allah Most High instructs us, "Call on Me, and I shall answer." Turn to Him with absolute conviction that He will, indeed, answer your supplications--in the way that He deems best for you, and in the time that He deems is best for you.

You can make supplication with your own, heart-felt words, but also strive to include some of the supplications of the Messenger of Allah (peace and blessings be upon him). An excellent book containing such supplications is Reflections of Pearls (White Thread Press).

(3) With this, recite the Qur'an regularly, keeping in mind the inward manners of Qur'anic recital. Imam Ghazali mentioned these in his work Ihya' `Ulum al-Din, and they are summarized in the following answer:

Proper Manners with the Qur'an

(4) When you feel down, keep repeating "Alhamdulillah" (All praise is due to Allah), bringing to mind a blessing of Allah upon you, each time.

And Allah alone gives success. May Allah grant you all good.

Faraz Rabbani