Here are some examples:
* Realized potential: The artist finally achieved his realized potential.
* Realized dream: She finally achieved her realized dream of becoming a doctor.
* Realized goals: The company met its realized goals for the year.
You could also use the adjective actual to describe something that is realized or has become a reality.
* Actual cost: The actual cost of the project was much higher than expected.
* Actual results: The actual results of the experiment were surprising.