Excellent! Thanks for asking. I am always self-improving. Part of the answer, however, is knowing HOW to learn something new. I am developing a video series to teach students how to teach themselves new material. We are quickly moving into a world where students at all levels are going to be required to teach themselves.
More specifically to your question, I recently completed a three-course challenging Technical Writing Certification from Cal State Dominguez Hills. I recognized this as an interest area or mine and I knew I did not have all the skills and training of a technical write and would need outside guidance.
I once had a high school student who needed help with university level chemistry, then organic chemistry, when she moved on to college. Chemistry is now a major topic of support as I had to learn the core concepts of organic chemistry.