The making of Dan Biggar, a relentless perfectionist for whom every day is a challenge

There are plenty of players at the top of their chosen sport for whom things come easy.

Some burst onto the scene and succeed emphatically, establishing themselves at the top of their game for many years to come.

Others, though, are not so fortunate. They have to fight relentlessly, overcome knock-backs, face critics and prove themselves time and again.