Yes I have. It was helpful for me to imagine myself this way: Chained to a dark lifeless, senseless planet for eternity... if you could have 7 wishes (besides leaving the planet) what would they be? For Me the answer is :Freedom from the chains, Nature and beauty around me, God's eternal love, family and people of all types that love each other, unrestrained availability of knowledge, Animals who are genital, and musical instruments and musicians.
And there is the root of my purpose. To attain these things because they are my greatest values that I want more than anything. These are the things I will devote my life towards.