Whatever you do in the "NOW" forms the future and changes the past...
try and tell me
that would be a great goal that my motto no matter what i keep my promise and never give up
No. You can change to influance your ending. But if you do then you where always going to change that something so in the end your ending is always going to be what your ending was always going to be.
The last letter you said or thought is already in the past. The moment is where you live and the actions reflect it
Makes sense to me.