Don't think about Loki in the beginning of everything.
Don't think about him as the classic little brother, envious of Thor.
Don't think about him yelling at Odin when he found out what he was.
Don't think about him when he became king, when he froze Heimdall and fought against Thor.
Don't think about Loki coming on earth under Thanos' control.
Don't think about his sick desire of a throne, his sick power greed.
Don't think about him when he floated Thor, or stabbed him.
Don't think about him when he told Frigga he wasn't her son.
Don't think about him banishing Odin and stealing the throne.
But do think about Loki when he called himself a monster, with tears almost rolling off his eyes.
Think about him admitting his weaknesses to Thor: he only wanted to be his equal, he felt like a small shadow compared to him.
Think about him when Frigga died, the guilt all over him, making him regret his previous lie.
Think about him when he sacrificed himself against Malekith, helping Thor.
Think about the look he gave Odin when he said he loved both of his sons, including Loki.
Think about his hurt face when he realized what a mistake had been making his and Thor's paths diverge when the latter pointed it out.
Think about him not wanting to do get help, and then doing it.
Think about him fighting on Asgard against Hela, for Asgard, and for his people.
Think about him sacrificing himself against Thanos.
Think about all the times he told Thor he wasn't his brother, and then think about all the times he called him 'brother'.
Think about the time he called himself the rightful King of Jotunheim.
Think about the times he claimed himself a Laufeyson, and the time he claimed himself an Odinson.
Think about the fact that the sun will shine on them again, and on us all.
Heroes can fall, can be hurt, but in the end, they always remain heroes.
Isn't that the matter about being it, an hero?