You most likely will make far more money from your business or profession than from your investments. So don't take risks with complicated investment schemes in the hope of multiplying your capital quickly. You're risking a lot to gain a little. Don't assume you can replace your wealth. The fact that you earned what you have doesn't mean you could do it again.
Markets change, laws change.
And as time passes, increasing regulation makes it harder and harder to earn a fortune. So treat what you have as though you could never earn it again. Don't use leverage. No one can predict the future. Events in the investment markets result from the decisions of millions of different people.