Carpe Diem has the same meaning as Seize the day, which means you aren’t worried about the future for a while, but you enjoy the present moment, indeed.
I actually had heard about Carpe Diem a lot of times when I was in high school, but I didn’t know what was the meaning at the time. My friend used to say it, though. What makes this phrase so special to me is the simple meaning of it.