What are somethings you've always wanted to learn and become a master in? This could include any subjects or skills that have deeply interested you. You never seem to have the time to learn them at the moment (you have more time than you think; procrastination is really what gets in the way) but you would like to learn them at some point in the future.
I would like to learn as much astronomy, geology, biology, environmental science, paleontology, meteorology, and botany as I can so I can have a better understanding of the natural world and the heavens above.
I also wish to achieve fluency in seven languages: Spanish, Swedish, Portuguese, French, Hebrew, Greek, and Russian.
I've also been interested in gaining experience in some sort of craftsmanship, whether it be automotive mechanics, welding, or carpentry. Sadly, there's no resources close to where I live that can help me in that area