Everyone has limits. You just have to learn what your own limits are and deal with them accordingly.
Borders I have never seen one. But I have heard they exist in the minds of some people.
“Argue for your limitations and, sure enough, they’re yours.”
“We all have our limitations, but when we listen to our critics, we also have theirs.”
“Don’t accept the limitations of other people who claim things are ‘unchangeable’. If it’s written in stone, bring your hammer and chisel.”