Coming in a bit late, sadly, but my response will be musical.

Fighter by Infected Rain

Key lyric:

You got this, you're a winner
A fight machine, a killer!

Also by Infected Rain is The Answer is You

Key lyric:

You have the power to switch the game
To make a difference and break the chains (Break, break)
You can be the change you want to see
Awareness will set you free
The answer is you, you have it all, the answer is you

I hope that this helps to stiffen your spine for your upcoming trials. I find the rage of compassion hidden behind Lena's harsh vocals pretty inspiring myself.