I needed to copy somewhere what you wrote in the article you referenced, namely,

1. Use a note-taking app and create a new note.
   I call my note “Things that I worry about.”
2. List everything you worry about — and keep adding things to the list.
   Everything that you worry about goes on this list, no matter how small.
3. Think of a solution for all your perceived problems.
   For example, if your financial situation makes you anxious, you need to create a plan to earn more or spend less.
   Then, start executing.
4. Do one thing every day that brings you closer to solving your perceived problem.
5. Finally, don’t worry about things you have zero control over — those things you have to accept. 
   If you know more about how you can do this; read Meditations by Marcus Aurelius.