If a problem is fixable, if a situation is such that you can do something about it, then there is no need to worry. If it's not fixable, then there is no help in worrying. There is no benefit in worrying whatsoever.
Occasionally I was so much better that I could go out; but the streets used to put me in such a rage that I would lock myself up for days rather than go out, even if I were well enough to do so! I could not bear to see all those preoccupied, anxious-looking creatures continuously surging along the streets past me! Why are they always anxious? What is the meaning of their eternal care and worry? It is their wickedness, their perpetual detestable malice-that's what it is-they are all full of malice, malice!
With a wonderful business, you can figure out what will happen; you can't figure out when it will happen. You don't want to focus on when, you want to focus on what. If you're right about what, you don't have to worry about when
My particular worries on any given day - how I'm doing in the polls or what somebody is saying about me... for good or for ill - isn't particularly relevant. What is relevant is: What am I building that lasts?