How to fix my lower lip? (Photos)

i fell on my face when i was around 8 y/o and my upper teeth went through my lower lip, my right front tooth chipped (which i fixed) but the left side of my lower lip is scarred in a way that is terrible. it makes my lip look very asymmetrical and if i so happen to bite my lower lip (which is a habit of mine) it gets swollen and more pronounced. it makes it very hard to actually talk to people comfortable because it's very noticeable. Not as much in photos, but a lot in real life.