What does “deal with mindset” mean here?


Senior Member
I tried to guess what he meant but I couldn't get it although I know each word's meaning.

"These words are some of the wisest we can consider when it comes to investing. Buffett is dealing with mindset. You’ve got to know you are going to win. It may not be today. It may not happen the way you think it should. But deep down inside you’ve got to know you will win. That will make all the difference."

Source:7 pieces of investment advice from Warren Buffett
  • PaulQ

    English - England
    Mindset (here, used uncountably) = a fix attitude or system of beliefs.

    attitude/belief..+... fixed (in a position) / in a solid, immutable state.
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