The road to wisdom

From Turning Silk: A Diary of Chen Taiji Practice, by Kinthissa:

Practise mindfully, with ease in the heart. Practise because it is doing one good, not because it will make one a master. To become a master, or mistress, of TaijiQuan is a very long aim. Practising without expecting the day to arrive soon will be the most sensible way. Remember the road to wisdom: "Err and err and err again -- but less and less and less."

The quote within the quote is from a grook of Piet Hein:

The road to wisdom? Well, it's plain
And simple to express:
Err
and err
and err again,
but less
and less
and less.