Thoughts only become powerful when they have emotion behind them. If it is a negative thought, take away that power of emotion. Better yet, think it all the way through and understand the reason for the feeling. By understanding it, you can bring consciousness to it and change it.
Listening without offering advice or an argument is called Active Listening. This indicates respect for the thoughts and feelings of the other person. To do so, stay present without jumping ahead to solutions or conclusions. Watch magic happen.
When we recognize our contribution to the situation, no matter the outcome, it is empowering. If the outcome is negative, the hardest thing to do is admit (even to ourselves) how we could have done things differently. This reflection gives us the knowledge that, in the future, we have more control if we want a more satisfactory result.