However, based on its structure, it probably means:
* Someone who is constantly looking for problems or difficulties. They might be pessimistic, overly critical, or prone to worrying.
* Someone who is quick to find fault or be suspicious. This person might be inclined to see negative intent where there is none.
Here are some possible interpretations:
* "He's so trouble-minded, he always finds something to complain about." This implies the person is always focused on the negative.
* "That trouble-minded neighbor is always watching us." This suggests the neighbor is suspicious and untrusting.
If you heard this phrase in a specific context, please provide more information so I can help interpret it more accurately!