Strategy/Plan to get 40k a year income?

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19 year old college student at UF majoring in finance. 

What can i do now to achieve my goal of having a 40k a year passive income? Looking to get real estate liscence/join clubs/attend meetings/get internship/get leasing job etc?

Short term/long term goal for post grad?

Want to live a minimalist life in the mountains/beach town. I think 40k a year could support that comfortably while working only a random fun job (eg mountain resort job/beach resort job).

Have my dad as an investor if down payment cash help is needed (100k+ cash most likely willing to invest).