Self-handicapping and self-serving bias are two forms of self-perception errors.

Self-handicapping and self-serving bias are both types of self-perception errors where a person distorts their own perception of their abilities or actions in order to protect their self-esteem or ego. Self-handicapping involves creating excuses or barriers that can be used to justify poor performance or failure, while self-serving bias involves attributing successes to one's own ability or effort and blaming failures on external factors.