The easiest way IMO is to keep track of the bread numbers.
We're on #7978 rn.
After 751 posts, click Catalog at the top or bottom of the bread,
then look for the next number – in this case it would be #7979.
It's usually right there near the top of the big list there.
Sometimes the Catalog gets fucked, and in those cases,
you'd click Return and use ctrl + f to search for the next number there.