Stand up for yourself it's a blessing

I'm a quiet person and I always try to avoid any drama and negativity as much as I can. That made some people feel like they could take the best out of me and use me to satisfy their own ego. They were right for a while I can't even lie to you guys lol. But not anymore. I finally talked back to a customer. She asked me about where the dairy products were and I told her to look up and she will be able to find it. She somehow find this rude and told me that I should be kinder towards customers IF I WANTED TO KEEP MY JOB. For a moment I thought I was talking to someone from the walton family or something. I replied with "I'm kind to anyone that deserves it" and as you can imagine I got coached for it. I don't care. it felt AMAZING to put that woman in her place. So my fellow walmart associates who are struggling to stand up for themselves, just do it.