Still Thoughts - by Master Cheng Yen

"Wherever we go, there is always a startling point and a goal.
We should pursue our goals from the very beginning till the very end,
never stopping halfway along the journey.

Mountain climbing is a fitting example,
where you must either stand it at the bottom of the mountain
or climb continuously to the very top.
By stopping halfway up the mountain you put yourself in danger of being hit by failing rock."

(source)