Ok if you have a choice to do somthing or not to, think about you in the future. Will you look back and say," wow I really liked that. I can't believe I almost said no!"
This happened to me 2 years ago. I had a chance to hold a panda! But I almost didn't. I was crazy I guess, then I thought "this is my only chance to do this and I will try it." It payed off, I don't know how I would feel if I didn't.
You may also have to chose like that but maybe without the panda part. I had to and that experience helped me now with littler choices.
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"Chances" is a song and it is awesome. I feelt like telling you because it's in the title!