You've got to eat while you dream. You've got to deliver on short-range commitments, while you develop a long-range strategy and vision and implement it. The success of doing both. Walking and chewing gum if you will. Getting it done in the short-range, and delivering a long-range plan, and executing on that.

This quote is saying that while working towards achieving long-term goals, it is also important to keep up with immediate tasks and goals. This is like the well known phrase: “Walking and chewing gum”, which basically means that someone can do two tasks at the same time. Doing both tasks successfully will ensure your success in the long-term. In other words, don’t forget to fulfill your obligations in the short-term while also planning for the long-term and make sure you are able to execute both in order to be successful.