What does the concept of implicit egotism refer to in psychology?

Implicit egotism is the psychological tendency for individuals to unconsciously prefer people, places, and things that share similarities with themselves.

Google

Egocentric bias is a memory distortion that involves enhancing our memories of the past. For example, an individual might remember scoring the winning goal in a soccer match when they actually only assisted.

Egocentric Bias

https://kpu.pressbooks.pub/psychmethods4e/

KPU Research Methods in Psychology - 4th American Edition

People are biased in thinking that their flaws are in the "social spotlight" more than they actually were (and more compared to other people).

Spotlight effect

On a typical day, human's tend to feel that we notice and observe others more than they observe ourselves. 

Cloak of invisibility illusion

When people are given vague descriptions of themselves that could apply to anyone, they tend to feel shocked at how spot on the description was of their life. It explains why people get convinced by astrological readings and fortune tellers.

Learn Before

Related

Learn After