Enough?

When would you consider enough is enough?

From the moment you can't sleep for several nights? Or wait until you cannot even eat, sleep or drink?

Recently, I couldn't sleep at night. Been thinking of lots of things around me. But most of all, I feel that my precious time with my loved ones have been sacrificed a lot. I do not know why I felt that way. It's not that I mind at all, but to the extent that the person doesn't even realize and doesn't even appreciate you for doing so despite numerous hints and some even direct confrontations.

Should I open up about how I feel to him? How would I want him to react after hearing me pouring out my feelings? Will he feel that I'm ridiculous? Will I leave him with difficult choices? Was it even right to confront again?

I feel so tired and I feel so used. =(