Individuals who cannot master their emotions are ill-suited to profit from the investment process.
To have a true investment, there must be a true margin of safety. And a true margin of safety is one that can be demonstrated by figures, by persuasive reasoning, and by reference to a body of actual experience.
Diversification is an established tenet of conservative investment.
Never mingle your speculative and investment operations in the same account nor in any part of your thinking.
The value of any investment is, and always must be, a function of the price you pay for it.