Agreed! Discipline and self-learning are keys that open many possibilities both in life and on this forum. By improving on others' threads, OP can then go further with trying something new or their own in theme, and improve upon that as well.
First, you need to pay attention, followed by corrections where necessary, and don't always assume that you know everything when you don't. The more the person is open-minded, that's how they will easily learn and adapt to things.
Another thing that matters is that if the person can stop looking for a way to outsmart the forum and focus on how they can learn genuinely and contribute to the forum, they will grow in no time, even before realising it.