I would wish for selfishly as well. I would wish for a full happy life in which I and all the people I love are not attacked by any disease or illness, I meet all my ambitions, and I find true love.
Hm... Probably either going back to my life 8 or 9 years ago, or erasing me and any trace of myself from existence. It would probably depend on my mood at the time. lol
I'd wish for unlimited cash so I can buy all my family houses and give them their dreams, including mine. I'd buy a nice house, a nice car, and a farm so my husband and I can live out our lives as farmers with a bunch of animals.