Confidence at the Poker Table

Confidence is important in poker, but overconfidence can be dangerous. Strong players know when to stay aggressive and when to slow down. Staying emotionally balanced is a huge advantage.
Do you think mindset is more important than strategy sometimes?

Ofc mindset is important, especially at the highest level of mtt. But for consistent earnings, strategy is fundamental.

Solid confidence: when it is based on study and discipline.
Ego: when you believe you are better than you actually are.