Do not feel bad about your mistakes or those of others. Love them! Remember that one: they are to be expected; two: they're the first and most essential part of the learning process; and three: feeling bad about them will prevent you from getting better.
Ray DalioI found that whenever I encountered a situation, rather than just reacting to it, it was tremendously useful to think carefully about how I should react to it and other situations like it. Besides providing me with more thoughtful responses in each of these cases, approaching things this way provided me and others with guidance on how to deal with similar situations when they came up in the future.
Ray DalioWhen there is pain, the animal instinct is 'fight or flight' (i.e., to either strike back or run away) - reflect instead. When you can calm yourself down, thinking about the dilemma that is causing you pain will bring you to a higher level and enlighten you, leading to progress.
Ray DalioDistinguish open-minded people from closed-minded people. Open-minded people seek to learn by asking questions; they realize that what they know is little in relation to what there is to know and recognize that they might be wrong. Closed-minded people always tell you what they know, even if they know hardly anything about the subject being discussed. They are typically made uncomfortable by being around those who know a lot more about a subject, unlike open-minded people who are thrilled by such company.
Ray Dalio