In an effort to improve her fitness, Clara decided to join a local running club. At first, she found it challenging to keep pace with the other more experienced runners. However, she was determined to persevere and improve her endurance.
Gradually, with consistent practice, she began to notice significant progress. She could run longer distances without feeling exhausted, and her times were getting better with each passing week. One Saturday morning, Clara completed a challenging 5-mile run with the club, feeling a sense of accomplishment.
This newfound strength and stamina not only boosted her confidence but also made her feel more invigorated overall. As she reflected on her journey, Clara realized that her experience in the club had taught her the importance of perseverance and consistency in achieving one's goals. The experience was both physical and psychological, leading to a profound sense of growth.
In this context, the word that best describes Clara's journey toward improvement is ______.