There are several duas to read when you are in difficulty but here is one easy one that you can remember and read on the misbaha or your fingers, whichever is easy is for you.
You can read this 100 times per day (99+1 i.e. full number of beads on the misbaha) or as many times as you wish.
Please remember not to be distracted by wordly things. Be sincere in reading this dhikr. Insha Allah, your difficulties will either be minimized or removed completely.
Many times we lose things. Some we can live without and other things cause a lot of stress. Maybe you have lost your wallet. Or maybe you have lost a piece of jewellery.
Whenever I cannot find something or have lost it, I read the following, at any time of the day or night, wherever I am:
Surah Kawthar three times with the intention of finding the lost object.
Insha Allah, you will be directed to find the object in a few minutes or 24 hrs or so. No matter how long it takes, you will find it if you have read the Surah thrice with the intention and sincerity.