Read this: https://www.gutenberg.org/files/32803/32803-h/32803-h.htm

Helpful, sans the last letter.

The quote:

To save time, take time in large pieces. Do not cut time up into bits. Adopt the principle of continuous work. The mind is like a locomotive. It requires time for getting under headway. Under headway it makes its own steam. Progress gives force as force makes progress. Do not slow down as long as you run well and without undue waste. Take advantage of momentum. Prolonged thinking leads to profound thinking. Steamers which have the longest routes seek deepest waters. Let me also counsel you to do what must be done sometime as soon as possible. Thus you avoid worry. You save yourself needless trouble and waste. You also have the satisfaction of having the thing done which is a very blessed satisfaction.

Prepare the fuel - good sleep, a clear conscience, a clear goal. And let it run for a long while without interruptions until the destination has been reached.