How do you win back somebody you've pushed away? Is it possible?

it isn't really possible unless you're obviously a largely different person since then
which you aren't, because you're here

With a peace offering. Everyone loves a good bribe, if it's accompanied by heartfelt sentiments.

>>39326350
How do I become a different person

>>39326393
spend most of your time in places you've never been before doing things you've never done before4

>>39326303
It depends on why and how you pushed them away. In general though, it's possible. Especially if a good chunk of time has passed since you last spoke. Give a decent explanation or apology, tell them why you want to speak again directly.