There is time enough for everything in the course of the day if you do but one thing at once; but there is not time enough in the year if you will do two things at a time.
Nothing is so intolerable to man as being fully at rest, without passion, without business, without entertainment, without care. It is then that he recognizes that he is empty, insufficient, dependent, ineffectual. From the depths of his soul now comes at once boredom, gloom, sorrow, chagrin, resentment and despair.
You can do what you want to do, accomplish what you want to accomplish, attain any reasonable objective ... if you want it, if you will to do it, if you work to do it, over a sufficiently long period of time.