Sir Godfrey Gregg
You need to remember why you started. What gave you the boost of passion that drove you to begin? What told your mind that you could indeed do anything that you set your mind to?
Find the source of your passion.
When you want to end, remember your beginnings.
There was a reason you started and that will be the reason why you finish. Find your passion.
Remember the beginning. You started and now you must finish. You can do it.
You believed it once and you will believe it again.