Ultimate freedom is the purpose of human life, and it is possible only through Enlightenment.
To reach enlightenment, you need comfortable survival. It is mandatory on the path. For comfortable survival, you need the right occupation. Discover your strengths and weaknesses, your likes and dislikes. Choose your work based on this knowledge.
Work that gives you pleasure is your life purpose and part of your destiny. Work that gives you tiredness, boredom, or frustration is not your destiny and not your purpose.