свои способности

one’s abilities

→ свой
phrase Rare #39,417
one’s abilities Свои is a reflexive possessive meaning “one’s own”; its form changes to agree with the noun and refer back to the subject.
RU: Она хочет развивать свои способности.
EN: She wants to develop her abilities.

Возможно, что он растерял свои способности.

It is possible that he has lost his abilities.

— Сенна (2010)

Люди иногда преувеличивают свои способности.

People sometimes overestimate their abilities.