To answer your questions: is it common? Yes it is, if these boards are accurate. Is it normal? Who knows. I don't think "normal" is a relevant or helpful definition. It doesn't really matter whether its normal. If it doesn't work for you, you should try to change it.
@WrylyAmused puts it really well in the sense that you have control over how much you want to "centre" people's opinions in your own self-assessment.
I think a lot of people have a tendency to put too much emphasis on how other people see them. It's totally understandable as society spends a lot of time telling us how we should behave/look etc. But it can become a kind of pathology.
I have felt like this at various periods of my life and I've deliberately trained myself out of it because it's just a constant excuse to self-sabotage. Counselling helped me and it would probably help you, but it's basically getting out of the habit of giving people this power over you.
The thing that's important to remember is that people will think what they think of you and you have limited control over this so it's a waste of energy thinking too hard about how you can change this. It's also true that if you give off a sense of caring too much about how other people see you they will respect you less for it. This is why so many people pleasers struggle to make deep connections. Other people can smell their fear of rejection and they don't respect them. Far better to be strongly liked by the few people you really care about disliked by others than to be tolerated indifferently by a majority of people and not really make much of an impression.
I'm in my early 50s and, partly due to getting older and partly due to a conscious act of will, I no longer give a shit about what people think about me other than a few limited parameters. I care that people think I'm trustworthy, truthful, intelligent and hard-working. Beyond that I don't give a flying fuck. I couldn't give a rat's arse what they think of my hair or the way I dress or my political opinions, for example. And honestly, the less I care about people's opinions, the more other people seem to like me.