lost

Sometimes I wonder if my personality was just a facade.
I hardly know my true self. My mood goes down and up so easily that I often get confused.Often, I find myself struggling to express my emotions in the way I want it to be.
I can be happy if I want to but somehow sadness always manages to find me. I want to be friendly but a part of me just wants to be alone. My actions, emotions, thinking are no longer something that come naturally, they are something that I struggled to make a decision with everytime.
At the end of day, I always ask myself this:
"Who am I? What should I do? What is the right thing to do/say?"

I really don't know.