First, I tried to learn the one I liked best ("Beauty and the Beast from Beauty and the Beast). But, it was hard (well, hard for someone with really small hands), so I decided I'd find a different one.
Then I tried to learn the first one I knew in the book and go from there ("When You Wish Upon a Star" from Pinocchio), but that one was hard too.
So then I decided to learn the one that looked the easiest ("Part of Your World" from The Little Mermaid), but that one was STILL hard.
I was quite at a loss. They were all really hard.
I've come to the conclusion that, not just in piano music, you shouldn't just stop because things are hard. Things will always be hard, and you're just going to have to grin and bear it. But, the end result, will be worth all the struggles.
For instance, after I can play "Beauty and the Beast", "When You Wish Upon a Star", and "Part of Your World", it will be so fulfilling. I learned those songs. I can play them.
Even though it might be hard, don't give up, it'll all be worth it in the end.