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In addition to employable skills, also improve your personal finance skills.

Balance your budget, have a healthy safety net of savings, investments, develop good spending habits, no high interest debt, live frugally, etc.

Nothing is certain, you might find yourself out of work at anytime for an unknown period of time. It's hard to anticipate the market, but you can always re-skill to adapt to the changing market. That's easier to do if you have a stable and secure financial foundation.