Went through 3-4 different ones, even though I was aware of this for at least 2 years. It wasn't magical, and the only "aha" moment was in discovering the potential market for it.

Of my original 4 ideas; one was technically sexy, the other was viral but had no monetization possibilities, the third one I launched was easy money but very small user base. This 4th one is SaaS, viral, multiple monetization possibilities, huge market, B2B and B2C .. but technically boring as fuck.