Thinking vs. doing. When you practice, take your time and think about what you're doing so you can build up the correct patterns and muscle memory. Let the muscle memory you've built up 'do it's thing' and just let it happen. I hear a lot of different opinions on who are the best players or which are the best playing techniques. Everyone and no one.
Opinions are just opinions.
As you play more and become more knowledgeable, you will form your own opinions and those are really the only ones that count. In the meantime, take what you read here as the gospel truth. I've heard some players soak their harmonicas before they play. Soaking ruins wood harmonicas and does nothing for plastic or metal ones. This practice was done a lot in the past when all that was available was wood harmonicas.