My worst one is probably sloth, although gluttony (I'm a big fatty and I just love food way too much) and envy are really big vices for me as well. And Lust as well strangely enough. I'll be 28 soon and my libido is way stronger now than it was when I was 18-19 and I don't get it, but hwatever.
I think people would say "wrath" but that's just more online than in real life.
Although honestly all 7 apply probably to all of us in some degree.