You probably heard about this philosophical question!
I say it is the wrong question.
If you believe it is half empty, you feel it is not enough and you are worried it might be even less.
If you believe it is half full, you are optimistic it will be full one day. But still: you feel it is not enough.
What is the glass anyway? Maybe your expectations?
Instead of seeing something as “half”, change the glass.
Take a smaller glass and you will have a full glass.
Then there is no more question.
It is full!
No more questions. No more “not enough”.
Take even a smaller glass, you still feel “full” and at the same time you have something to share, so somebody else can feel “full” as well.
You then can feel complete and even more than that, because you shared and made somebody happy.