It takes time to + (verb)

It takes time to learn a new language fluently.
It takes time to build a strong and lasting friendship.
It takes time to develop valuable professional skills.
It takes time to heal from emotional wounds.
It takes time to master playing a musical instrument.
It takes time to adjust to a new environment.
It takes time to create a successful business from scratch.
It takes time to understand complex scientific theories.
It takes time to cultivate a healthy and loving relationship.
It takes time to recover from a major surgery.
It takes time to improve one's physical fitness and endurance.
It takes time to write a well-researched and thoughtful book.
It takes time to adapt to major life changes.
It takes time to save up for a significant financial goal.
It takes time to recover from a broken heart.
It takes time to develop effective problem-solving skills.
It takes time to build trust with others.
It takes time to refine artistic talents.
It takes time to overcome past traumas.
It takes time to achieve a high level of expertise in a particular field.