I will always believe in my ability to achieve whatever I set my mind to.

The scarce thing isn't ability. It's the setting — choosing one and not the other five.

Most ambitious people are carrying six half-finished projects, and each was abandoned at roughly the same point: the moment it stopped being interesting and started being work. Ability was never in question. Commitment just got spread thinly across six things instead of thickly across one.

Belief in yourself is far easier to sustain once you've given it something narrow to be about. Pick the one you'd be quietly ashamed to abandon again. That's usually the honest answer, and you knew it before you finished reading this.