You may be able to hide your emotion but you can't run from it.
It will eventually explode over time.
But, it doesn't mean you have to share your emotion all the time.
You'd just have to find a way to deal with it.
I'm not too expressive, but it's not that I always have my emotion under control. I've been constantly looking for a better way of expressing or dealing with my emotions.
But, it's so damn hard.