In general, your portfolio should have a wide spread of investments, in different risk categories, which when taken as a whole reflect your overall attitudetorisk.
When pressed, schools can name researchers among their faculty who were concerned about the financial services industry's cavalier attitude toward risk in the lead-up to the credit crunch, but very few can name anyone who countered the relentless optimism of the pre-downturn years.
Because career success depends so heavily on happiness and attitude, you need to treat these factors differently, and not just as two more parts of an overall risk-mitigation model.