Oddly Wired
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self esteem

You take credit for your wins and blame bad luck elsewhere.

The self-serving bias is the tendency to perceive oneself as responsible for successes and external factors as responsible for failures, though researchers like Miller and Ross (1975) argued this may stem from information processing rather than ego defense.

Miller and Ross (1975) is a critique of the motivation-based evidence for this bias, not a definitive confirmation of it.

You rarely blame yourself when things go wrong.

Where this comes from

Study
Miller and Ross, 1975
What the check found
The definition is correct, but the citation implies the paper confirms the ego-defense theory, whereas Miller and Ross were famously skeptical of that interpretation in their 1975 review.
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.