evolve or preserve?

quite often when trying to decide
who to be with, you would at times
wonder who to choose and why.

there are always pros and cons about
each person, but what's also vital
is how they affect YOU as a person.

and i think that's nicely reflected
in jeff's quote during the finale
of season 1 of the show 'community'.

i quote;

"...slater makes me feel like i do
when i write my new year's resolutions.
she makes me feel like the guy i wanna be.

and britta makes me feel like the guy i am
three weeks after new years, when i'm back
to hitting my snooze button and screening
my mom's phone calls. back to who i really am.

so, do you try to evolve?
or do you try to know what you are?..."

so, which would you choose?