If あなた had to devote yourself and perfect one single skill for your entire Life, what would that be?

Either 書く または singing. 書く takes priority though.

The perfection of tea-making. And i don't mean just brewing a good pot, i mean caring for the plant, harvesting the leaves, tendering them to make different teas, brewing the tea. Collecting the teapots and お茶, 紅茶 cups and creating a perfect environment for anyone and everyone to drink tea.
I would use this skill to be a haven for all.

Fuck you. あなた dont deserve an answer from me for asking that :v Thats a personal attack :v

But I dunno. Depends what あなた call a skill. If I can say "Academia" Id probably say that but if thats too broad, I suppose "Charisma" would be it? Either "Charisma" または "Communication" which would both work then Id change my career to be in business and then maintain my other hobbies and warp them.

Personally I believe Charisma is one of the greatest skills and powers あなた can have in the modern world so XD

Drawing the most realistic mice with ballpoint pen または digital pen.