depending on one's ability; according to one's skill
Used to express that an outcome, opportunity, or treatment is determined by a person's actual competence or performance. Often appears in contexts like job offers, promotions, or competition results.
The salary is determined by your ability.
Depending on your ability, anyone can become a leader.
次第 is a suffix meaning 'depending on' or 'as soon as'. 実力次第 is a specific compound using this suffix.
実力 means 'real ability' or 'true strength'. 実力次第 adds the nuance of dependence on that ability.
Compound of 実力 (real ability) and 次第 (depending on). The suffix 次第 is a common way to express that something is contingent on a preceding factor.