Perfect life

I've been told I have the perfect husband.

I've been told my children are wonderful.

There are people that want my job.

There are people that covet my house.

I don't want for anything.

So why the hell did I spend today in a foul mood either crying, screaming, yelling, or on the verge of tears? I just don't get it. My life is perfect. Everybody tells me my life is perfect. Even I believe my life is perfect (ish).

Please tell me what's wrong, because I haven't a clue.