Oddly Wired
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memory

You misremember your past self to fit your current values.

A 1986 study by Ross and Conway demonstrated that individuals recall their past attitudes as more similar to their current ones than they actually were.

Ross, M., & Conway, M. (1986). Remembering one's own past: The construction of personal histories. In R. M. Sorrentino & E. T. Higgins (Eds.), Handbook of motivation and cognition.

You edit your own past to keep your present self feeling consistent.

Where this comes from

Study
Ross (1989), Psychological Review
What the check found
The phenomenon of consistency bias is well-documented, but the source citation is imprecise, mixing the 1986 empirical work with the 1989 review paper.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.