Frannie,
Surprisingly, it was my work in the computer industry that taught me I can do anything I put my mind and hand to. And sewing and patternmaking as a teen helped me in my computer career! Afterall, my mom (and I have thanked her for it) forced me to rip out one inset sleeve that I had sewn over and over and over and... and it was awefull... and made me rip it out until I did it right.
Patience and tenacity. Although as I get old, I'm not as tenacious as I once was....