I really want to do a phd in philosophy and teach, but the society says I should not. I am 19 , but have got to go back to high school to finish up . A long way to go. How do I motivate myself? How do I ignore my other and unimportant desires/distractions to become what I want and is most meaningfull to me?

I think it is great that you know what you want at the age of 19 - I certainly didn't. If the goal of achieving higher qualifications in philosophy is a genuine goal for you, then it will stay with you for the next ten years or so, by which time with a bit of luck you will have arrived at your destination. If it turns out to be a genuine goal for you, then at worst what you call distractions will just delay you a bit. In fact, the philosopher who lived his or her life without distractions is just a myth, and certainly not a standard against which the rest of us should be judged.

"Life is short" is often said but, in fact, for most people life is quite long, at least in the sense of presenting more opportunities than one imagines.

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