하기로 결심하다
Use this pattern to show a firm decision to do something. Put the verb stem before '기로 결심하다'. It sounds more deliberate than simply saying you want to do something. You can reuse it in many situations, such as '이번 주말에는 일찍 일어나기로 결심했다.'
이번 주말에는 일찍 일어나기로 결심했다.
I decided firmly to get up early this weekend.
