What does the slogan "talking about problems creates problems, talking about solutions creates solutions" capture?

That the language you dwell in shapes the reality you get — problem-talk deepens problems, solution-talk opens solutions.

This de Shazer / Berg maxim is the constructivist premise applied to conversation: if we partly construct our reality, then what we keep talking about grows. Pour attention into analysing the problem and you elaborate, reinforce and entrench it; direct attention to the wanted future and you start building it. This sharpens into a contrast between two registers:

• Problem language separates — it isolates, blames and fixes people in their difficulty.
• Solution language connects — it's called the "language of the heart," because it joins people around what they want and can do together.

It does not mean denying pain; it means choosing which line of talk you develop. The choice of focus is itself an intervention.

Tip: Notice which conversation you're feeding — you tend to get more of whatever you keep discussing.