Hi Lad. I'm sure you could make up any number of spreads to answer your specific fears/concerns about taking up piano again. For example:
Do a simple layout, left to right each card answering one of your concerns.
1 2 3 4 etc...
1. What will be the biggest obstacle if I take up piano again?
2. What will be the biggest reward?
3. What do I really hope to get out of piano lessons?
4. What (besides piano) will I learn from taking lessons?
etc....
However, take it from me, a person who also had piano lessons as a kid and quit early on, and then took up music again as an adult. Yes there will be obstacles and challenges, but there will be so many personal rewards, especially if you are doing it out of love for the music and the instrument.
You could spend the rest of your life regretting that you didn't at least try. Go for it and see what happens. You have nothing to lose. It's the only way to find out.