YOU SAID:

Despite the fact that I am now very tired, I can't even consider the idea of quitting because it will lead to my failure; however, if I did quit, it is likely that I would gain more free time and be able to do other things like learning how to play an instrument.

INTO JAPANESE

私は今という事実にもかかわらず非常に疲れて、私ことはできませんも考慮して終了私の失敗につながるための考え方ただし、私がやめた場合より自由な時間を得るし、楽器を演奏する方法を学習のような他のものを行うことができるという可能性が高いです。