If you are forcing yourself to put up with something, you will end up putting yourself in a situation in which you would have to endure even more than before.
ご質問ありがとうございます。
"If you are forcing yourself to put up with something,"＝「もしあなたが何かに対して我慢することを自分に強いているのであれば」
"you will end up putting yourself in a situation"＝「あなたは～のシチュエーションに陥ることなってしまう」
"in which you would have to endure even more than before. "＝「今よりもっと耐えなければいけないシチュエーションに。」
ご参考に。
アメリカ合衆国 
