What do you want to say to your 15 year old self?

You're English is good bro ️ While 'on their 20's' is still really easy to understand and no one minds during informal conversations, the correct way most say it is ''in their 20's'', but I don't think anyone misunderstood this, as long as the point gets across well. (I skimmed through comments, sorry if someone already said it lol) I'd tell my......   reply