The things that you dread can actually never touch you, NEVER,
you fear because your conditioning makes you project and so you trigger for yourself feelings that things can touch you but if you think about it, rationalize it, you'll notice that it can't,
(someone can say you're ugly [ or it stinks, or that music is awful, or that texture is unpleasant, in fact anything that is processed with our senses, but in a negative way], that's the opinion of one insignificant person, and see, your face is unchanged [and you can decide that you love the smell, you love the music and that you love the texture, for yourself], words don't change who you are (or who you decide you are), we have to realize that, and why placing the opinions of others above our own opinions, it will be incoherent, your feelings depend only about what you think is important, and if you think the most important is to accept (and finally love), even that unconscious person, then you won't let yourself be touched by negativity, and negativity is always coming from a dread about the exterior, our perception of the outside world, if we and our body were alone in the void, with nothing and no one, there won't be no judgements, no comparisons, and so no fear at all, no negative thoughts, you can reach that peaceful place inside you, everyone has it, inside, it's called the inner Being, it's our real self)
and so you're unchanged, nothing can change the attitude you decide to take for yourself, in the end you understand that it's your choice, and so you can choose to always see life positively. Stop projecting!

(complement : and when you reach that self confidence, you don't have to got along with people that are poisonous for you, you can accept they exist, but then it's your choice to fill your life with positivity and fitting people.)