Luxury is one of those concepts that we know in principle what it means, but it's tough to pin down in reality. It's not the thing itself, but our attitude to it and our perception of what meaning and provenance it possesses.
There is a very famous film of Picasso painting live. About halfway through creating an effortless masterpiece he says “ Ca va tres mal” (it’s going very badly). Even someone like Picasso struggled to get a painting to go where he wanted it to go. It’s his self-belief, confidence and self-trust that allows him to work through the “bad” stage and experience that tells him that he can make it right. I’m certainly not in that league, but that helped me to understand that I should push through (although sometime you can try too hard and take a sketch too far) and trust my instinct.