idiom
tough it out
力と決意で困難な状況を耐え忍ぶ
Meaning
to endure a difficult situation with strength and determination
Example
Even though it was a tough day, she managed to **tough it out** and finish the project.
難しい一日だったけれど、彼女は**tough it out**してプロジェクトを終わらせた。