Final answer:
The concept highlighted in the statement is the importance of perseverance in personal development and goal attainment.
Step-by-step explanation:
It is persistence and tenacity, the effort required to do something and keep doing it till the end, even if it's hard. Perseverance originally comes from the Latin perseverantia and means to abide by something strictly. This makes sense, because if you're doing something in spite of all the difficulty, you're being strict on yourself.
The concept highlighted in the statement is the importance of perseverance in terms of personal development and goal attainment. Making excuses does not bring you any closer to achieving your goals, but perseverance and determination do. By persevering through challenges and obstacles, you are more likely to make progress and ultimately reach your desired outcome.