Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment.
Go for it now. The future is promised to no one.
Life can only be understood backwards; but it must be lived forwards.
Life is a series of collisions with the future; it is not the sum of what we have been, but what we yearn to be.
The future belongs to those who believe in the beauty of their dreams.
We are all here for some special reason. Stop being a prisoner of your past. Become the architect of your future.
With the past, I have nothing to do; nor with the future. I live now.