I love that line from the Cinderella song. If you want to shortcut your way to to finding out what you want in life, what kind of things you aspire to achieve than look no further then your emotions during a relaxed state or while unconscious. Emotions are an information data base to figuring yourself out. They provide information on your boundaries, desires, internal and external perspective and all you have to do is observe it. You can then take those observations to make informed life desicions.
The second part of the song which is also extremely important says:
” Have faith in your dreams and someday
Your rainbow will come smiling through
No matter how your heart is grieving
If you keep on believing
The dream that you wish will come true”
This part talks about believing and having faith in your dream. The difference between believing and having faith is that belief is trust and faith is committment. Then the song talks about enduring heart grievances. This lets us know this will an emotional turbulant ride but, no matter if we keep to trusting and push through, someday that dream will come true.