Ask HN: How do you scale yourself?

Over the past several months, my company has started growing, and I've been getting more and more on my plate. One of the things I constantly think about now is, "How do I scale myself?" and what are the strategies to actually get there? For example: hiring an assistant, better delegation, task management through frameworks like GTD... Etc...

I'm curious: what tools and strategies do YOU use to get more done and scale yourself?