“Destiny is not a matter of chance; it is a matter of choice. It is not a thing to be waited for, it is a thing to be achieved.” — William Jennings Bryan
“If you accomplish something good with hard work, the labor passes quickly, but the good endures; if you do something shameful in pursuit of pleasure, the pleasure passes quickly, but the shame endures.” — Musonius Rufus
Forget about all the reasons why something may not work. You only need to find one good reason why it will.
Slow progress is better than no progress. Not making progress is still better than moving backwards.