My advice to give someone on day one is that you’re going to feel the emotions. They’re not going to be good emotions. Do things that bring you back to the comfort of being a child. Some ideas are watching an old movie or tv show, eating a comfort meal and or snack from your childhood, maybe open up an old yearbook or whatever time capsule you have. Like I said the emotions are going to deep but I think nostalgia is comforting and gives you time to self reflect as well.