Growing up, I've always had that need to be likeable. I used to be very self-conscious, I'd go all out just for people to like me and I'd always feel upset if someone tried to avoid me or made me feel like they just didn't like me at all. Back in grade school, it was easy to be liked because I was always on top in both academics and extra-curricular.
For the same reasons, it was also a lot easier to be disliked. One of my classmates even told me that I didn't have calcium and I was so thin and skinny so I shouldn't join any sports activities. I cried. But that was grade school. And it was still fun despite the occasional trash talkers and bullies (bullying that's been happening nowadays is a different story though).
During high school and college, I could pass as Ms. Congeniality. I mean, I made true friends and I was sincere with my friendships with them. It's just that, along the way, I'd meet some people that I'd like to impress so I usually go with the flow and agree to whatever they said. When someone asked me if I wanted pink or blue, I'd usually say "it's up to you, it doesn't matter.."
I was kind of worried whenever I tried to disagree. I was afraid that all eyes would be on me. Nevertheless, high school and college were more fun than ever. The need to always be liked by everyone was more of a personal battle.
As a lead trainer, I often see adults acting like kids in my class. I get annoyed with trainees who simply couldn't follow simple rules and who need to be reminded ALL the time as if they're a bunch of toddlers. If I find that someone keeps on violating the rules, I always get sarcastic. I don't yell, but yes, I can really get sarcastic. With that, it's probably very easy to be hated or disliked.
Thankfully though, I've never received any negative feedback from all the many trainees I've handled so far. The worst feedback I probably got was from a trainee who was a law student (I don't have anything against law students by the way because I myself wanted to be one). That trainee actually threatened to sue me because I didn't accept the reason for his 3-day absences without official notice (and he called me a bitch!) Sorry for the word.
With so many people in the world, it's impossible that everyone likes everyone. There will always be someone who won't like you and would even make you feel that they don't like you at all. Again, do not worry. The sooner you accept who you are, the sooner you won't care about those people who don't like you.
The world is not just all about them, and not also all about you. We can still co-exist peacefully even when we don't really like each other. However, when people do something really bad that affects you physically or emotionally, then that's a different story that deserves its own blog post, not by me but by someone else who's more qualified to talk about it.