How to choose a portfolio from the efficient frontier?

How do you choose a portfolio from the efficient frontier?

I know that if there exists risk-free asset, then you would combine a portfolio from the efficient frontier and the risk free asset and that would be your optimal portfolio.

But if you do not have risk-free asset, how do you choose one from the efficient frontier? In other words, how do you choose the maximum portfolio volatility?

You use your risk tolerance.

You find the intersection of the efficient frontier and your tangential indifference curve. This is in the CFA curriculum.

Gasp. Did you just assume his financial literature

CSI300, all other portfolios are inferior.

This belongs in the investment forum.

https://www.quora.com/How-can-you-do-portfolio-optimization-in-Excel

This belongs in the CFA hookup forum.