Assume that the future can change based on your actions, so any historical information that you bring along with you from the intervening 25 years may quickly drift out of the new realities history.
Edit: also assume that you can be given a healthy 21-year-old body if you want or take your previous self’s place.
Further, identification will be provided for you if you were not born at that time.
Reflecting on my own actions and the folks I met on the way, taking a better attitude would help a lot. I was young and had good conversations with different types of people but did nothing with that for close to another 15 years.
We had much of the information then, IMO. And I remember talking with much older folks who were willing to listen to teens/young adults about a variety of topics. I just wasn’t willing to say anything. Even to my peers.
I would take a better attitude.