Only a mask

I am one who seems to have it all
But yet I cannot get even a drop
Most think that I am open
But in reality I am always closed
I shelter and fear for what they will think
Even though most will not judge
I am the one who seems happiest
Yet at last it is only a simple mask
Very few times where I am totally at rest
But those are the times I cherish
For they are a few between far
And make my life a little more complete
Yet there will always be a void that may never be filled
And if it is, it will only be ice
For it will be on a warm summers day