1, "obsession has penetrated into the bone marrow": This word is usually used to describe a person who has a very strong attachment to someone or something and has penetrated into the bone marrow, making it difficult to give up or give up. It represents firm determination or indomitable spirit.
2. "Persistence in life": it means sticking to your own ideas and not changing your feelings all your life.
The sentence "Don't forget when you are obsessed with something" means not to give up easily, but to strengthen your belief and not forget your initiative. Among them, "obsession" refers to the persistent pursuit and persistence of something, while "obsession" refers to never forgetting or giving up.