When’s the last time you did something for the first time?
Yes, there is much to be said for consistency and the pursuit of focused excellence.
And, developing one’s range is also powerful. The experience of stepping into the unknown (and incompetence!) to learn a new thing is frightening and wonderful.
And using “last time” in a new sense… Our lives are rather short, when you think about it, and there will be a last time that we are able to do something for the first time. This urgency helps us accept the risk of doing something new.