I’m glad you’re not actually that on the edge - I hope you believe it when push comes to shove and don’t forget.
In many cases, not feeling valued means you’re not getting the value you could be - and that can literally be millions of dollars over a career difference.
I'm not a hard negotiator and I frankly don't want to be. I prefer to give a little when I can, and I'll just move on if I feel I'm being abused. There are too many other opportunities to stick around where you don't feel appreciated.