The art of T'ai Chi embodies this more than most because, uniquely among the martial arts as far as I am aware, it is often practised solely for the purpose of exercise without reference to martial aspects. Then, and only then, can you guarantee to make progress, for progress is not just for the gifted or naturally adept, it is the natural consequence of diligence and perseverance. Diligence because the only true way to learn the art is through continued practise, and perseverance because it is not always possible to practise, particularly in a university where exams and other deadlines have priority. It is easy to miss a week or two and then feel that you have fallen behind, never to catch up. T'ai Chi is not like that.
Progress is personal.
There is no competition. You should practise because you enjoy it, not because it is a chore. A missed session is a reason to come to the next ever more enthusiastic, but it doesn't always seem like that. Perseverance, then, is essential. It is my hope that whosoever attends my classes derives some benefit from their practise.