Try it again, this time keep in mind that your previous record was focusing for 3 seconds. I try to convince myself an effort is precisely as pathetic as it sounds.

Aim to make it all the way to 6 seconds. Tell yourself this is a major accomplishment for you - a 100% improvement.

Then you need to take a break, have something to eat. Stretch your muscles, do some shadow boxing and see how far you can make it beyond 12 seconds.

Scream inside your head, YES I'VE MADE IT!

The other thought processes deserve to be mocked like this.