Figure I'm on the go (3)
I believe the answer is:
vim
'figure' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe there's a link between them I don't understand?
'i'm on the go' is the wordplay.
'on' is a charade indicator (letters next to each other).
'the go' becomes 'v' (I can't justify this - if you can you should give a lot more credence to this answer).
'im' after 'v' is 'VIM'.
Can you help me to learn more?
(Other definitions for vim that I've seen before include "Energy, enthusiasm" , "Pep and energy" , "Pizazz" , "Pep and vigour" , "Liveliness" .)