The JPMorgan Nasdaq Equity Premium Income ETF (JEPQ) is a solid option for turning your investment into a high monthly income stream.If you were to invest in an S&P 500 exchange-traded fund (ETF) today, you'd capture a yield of just 1%. Not too impressive. Move up to a dividend ETF, however, and you could find a yield in the 3% to 4% range. That's better, but it still might not deliver the income you're hoping for.Covered call ETFs are where you can start earning yields of 10% or higher. To be clear, there ...