If it's both terrifying and amazing then you should definitely pursue it.
This has been something I am familiar with lately. But often a dream can be too terrifying, and then paralyzing and then you don't get to the amazing part...
This reminds me of another quote, by Rumi, "Leap and the net will appear". My husband is always good for me- reminding me that you do need to root in the posts so that there is a foundation for the net to "appear" on. Otherwise you can be so positive and excited, but broke and unable to move forward. This year I am planting my posts, getting ready to leap.
And the terrifying and amazing dreams are growing.