So if you wanna change the world, don't back down from the sharks.
English phrasal verb
back down
To stop defending a position.
Examples from real speeches
See how speakers use “back down” naturally, then open the full speech for more context.
There will be times in life where you need to stand up for yourself, times when the right thing is actually to back down and apologize, times when the right thing is to fight, times when the right thing is to turn and run, times to hold on with all you have, and times to let go with grace.