Who am I?

In between Months, I'm a different person.
In between Weeks, I'm a different person.
Weekdays and Weekends, I'm a different person.
Weekday-days and Weekday-nights, I'm a different person.
At home and outside, I'm a different person.
Being Sober and in the Drunken state of mind, I'm a different person.

I have so many masks to put on day in day out.
Which is Me? I hope someday I'll get the answer.

Let's get on with this Masquerade.