When you can’t handle something, the best solution is to forget it.

If you keep worrying about everything you do, all that effort is wasted—wasting your time, energy, and opportunity costs.

If you want to do better, there’s just one key principle:

Don’t do things that don’t produce results. If something can’t be handled, don’t handle it and don’t think about it. At least you’ll save your time and energy—that’s your capital.

When going to war, if all your forces get bogged down on the battlefield, you lose all initiative and are left only praying. Once you see some units stuck and unable to maneuver, you must realize that your real cards are your reserve forces—the ones still available to move.

People who get bogged down in their jobs have no future. If all your time is spent handling trivial matters, how can you possibly have the energy to seize unexpected opportunities for promotion or a raise?

The same goes for investing, and for life in general.

What often changes the course of a battle is just that small amount of mobile force. Similarly, what shapes a person’s destiny is that little reserve of energy they’ve saved up.