Hey, I was thinking about perhaps a sphere aimed towards competition or challenge. Like the character thrives to hear a challange and will enter almost anything as long as it is a competition in any form, it could be a running contest, being able to drink most or just a plain old duel etc. Anyway just something I was thinking about:-).

If you take a close look at spheres such as Combat or War, that is
exactly what they're about. Combat encompasses much more than just
physical violence. In fact, all of the spheres have deeper meanings
than just their one-word name. A person dedicated to Combat will
always seek, or be hopelessly fated to encounter conflict in the
majority of their interactions. Hell, you could get away with being
and extremely impatient bastard who struggles to tie his own shoe-laces.

The possibilities are endless for what the spheres can be interpreted
as, but I don't think another sphere will be made out of something
that easily falls within other catergories. However, I think something
like a Trickery sphere could work. This would take into account the
pranksters and fools who live for little kicks, rather than grand
schemes. Eh, that probably falls into some other sphere too.

Bizarro I'm helping!

If your focus is less on winning and more towards competing or testing your abilities, it be any number of things.

Resisting or testing yourself against the sphere of Fate.
Dedication to improving and/or testing yourself.

It could even fall under Knowledge, Vanity, Truth, Judgement, or Envy. Just for a start.

The influence of pride on your life could have this effect.

nt