It took over a decade for me to feel confident enough to return to school after I graduated high school. I don't know how many times, whenever I expressed a desire to improve my education to a JW, that my dreams were heckled with comments along the lines of how my time would be better spent Pioneering™, or that Armageddon™ is Right Around The Corner™, or that Armageddon™ would come before I graduated and I was taking a huge risk with my Spirituality™.
Finally, it occurred to me that for me to allow my aptitude for science and medicine to go to waste would be like the parable of the slave who had been given a talent, but didn't even bother to put it in the bank to earn interest, and had nothing to show the Master upon his return. If I had been "blessed" with this "gift" but refused to develop it, I would be showing an ungrateful attitude to "god" who created me with this talent. That reasoning worked quite nicely with JWs, especially when I pointed out their own talents and how sad it was that they didn't pursue their dreams and goals... just waiting for the New System™ to develop them.