Dua-for-success(rabbish-rahli sadri...)

Dua for success, Interview, difficult task:
“Rabbish rahli sadri, wa yassirli amri, wah lul uqdatan min lisaani, yaf kahu kauli,”
Translation: ”O my Lord! Open for me my chest (grant me self-confidence, contentment, and boldness); Ease my task for me; And remove the impediment from my speech, so they may understand what I say."
[Surah Ta-Ha; 20:25-28].