en_tn_lite_do_not_use/1co/09/15.md

so something might be done for me

"so you will do something for me"

It would be better for me to

"I would rather." Paul is speaking of what he desires, not necessarily of what God thinks is best.

make my boast empty

"take away this opportunity I have to boast" or "make it so I have nothing to boast about"