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It seems to me that one of the things that we attach to strongly is our accomplishments. These are things we have done in the past, where we have spent time and effort, perhaps competed against others, and at the end of that there was something completed, and acclaim from our fellows. Perhaps at the time we felt successful. All of these things cause us to attach to these factors — to places, to people involved, to activities we did.
It is quite subtle and difficult to let go of, and underlying it there is the feeling that we would like more success. It’s the same old desire, in a slightly different face. So when you go back in your mind over your career, the things you have done, and especially if you have dreamt about these things, then you can see the attachment to accomplishment staring back at you.
In a way, that desire for success wants only the best for you, but it is still a desire, one of the Three Poisons which is at the root of samsara. It is part of the mind that keeps you motivated through the everyday slog of existence, but it also keeps you from realising peace.