You conquered yourself and Rome
in this case, you would use the 2nd singular reflexive
tē because "yourself" refers back to the subject of the verb. if you wanted to use
ipse, the English sentence would have to be something like "You yourself (
ipse here) conquered yourself (
tē here) and Rome."
You denied myself
i'm pretty sure this one just doesn't make sense. other options would be "You denied yourself" (using reflexive
tē) or "I denied myself" (using reflexive
mē)
something to remember about reflexive pronouns--i'm going to put it in italics because it's important--
reflexive pronouns always refer back to the subject.
hope this helps