Learning requires risk, often giant leaps of faith on the part of a student confronting failure over and again before mastery becomes possible. (gettingsmart.com)
[They take a giant leap of faith that they can solve a problem they see and that it will result in a business model that works (the believer mindset).] (inc.com)
I think my friend that you are taking a giant leap of faith LOL. (religion.blogs.cnn.com)