I can't stop thinking.
What can't you stop thinking about?
I have so many worries, I can't get them out of my mind.
Thinking about it too much might make the problem worse. Have you thought about yoga or meditation?
Why can't you understand that I need a distraction not pestering questions?
Meditation might give you exactly the ease and clarity of mind that you need. When your mind constantly cycles through worries it can be very unpleasant but meditation can train the mind to become more calm and stable.