Anxiety about the future and sorrow over the past are the two thieves of peace. The Prophet Muhammad (PBUH) taught us this powerful supplication to reclaim our mental state.
The Dua for Distress
اَللّٰهُمَّ إِنّ۪ي أَعُوذُ بِكَ مِنَ الْهَمِّ وَالْحَزَنِ
Translation: "O Allah, I seek refuge in You from anxiety and sorrow, weakness and laziness, miserliness and cowardice, the burden of debts and from being overpowered by men."
Reflection: Notice how this Dua links emotional states (sorrow) with physical inaction (laziness). Healing the heart often leads to a more productive life.