This will not affect your original timeline.
And lets take take this hypothetical a step further:
Sceanrio 2:
Say, in the alt-timeline, present-you arrive in the year when past alt-you were 10 years old, your original parents/guardians/caretakers dies for some reason on this timeline, would you care enough about your alternate-self help them? Like take on the role of a parent/guardian in place of their now-dead parents? (Basically, its a roundabout way of asking: How much can you tolerate yourself?)
My answer:
I think I could probably remember enough of myself to understand my alt-self enough to become friends. But if their timeline got fucked up, and their parents die, I’m not sure I can actually deal with this kid who, is me, but not me, like… I would probably get so annoyed at this kid, but also, I’d think about myself when I was 10, when I was this kid, and then feel pity. Idk if I could ever abandon an alt-self, because I’ve already feel abandoned (not literally, but like as in terms of the emotional side of parental love that I never gotten), I wouldn’t wanna see someone who is practically me, also go though the same abandonment.
Idk… Time travel is so weird.
Well I think the main issue would be my lack of income to take my younger self on as a dependent. 10 is a particularly interesting time so I would still be coming out of the introverted kid and in process of just becoming a standard nerd. I would likely see my adult self as something like my older brother who I liked.
I mean… you are literally back in time. Like you are being transported into the alternate world. Don’t you remember the stock market stuff? Like literally any info from the future (aka: now-present) could help you get income. I mean its gonna become slightly a different timeline since butterfly effects, but still. Like invest in a tech company you know will succeed.
Oh. Thing is so I went back in time with whatever is on me because I don’t carry cash and im kinda old and my tech experience does not translate well to the punch card era and like teaching would take credentials and I can’t even prove my education. Yeah money will likely be an issue. Literally going to have to beg for a few bucks to invest and eventually be rich rich rich.