What are the meanings of the song "The Kill" and " From Yesterday" by 30 Seconds to Mars?

please be specific

What are the meanings of the song "The Kill" and " From Yesterday" by 30 Seconds to Mars?
The Kill:-





Jared Leto described the meaning of the song as, "It's really about a relationship with yourself. It's about confronting your fear and confronting the truth about who you are." He has also said it is about "confrontation as a crossroads" — coming face-to-face with who you really are.





Im not too sure about From Yesterday...