According to Ozan Varol, who worked at NASA on the Mars Rover:

For me, it all boils down to one question: Will this help?

Will it help to worry about who will win?

Will it help to refresh your favorite news site for the umpteenth time this hour?

Will it help to shake your fists at the Gods, wishing the universe dealt your candidate a better hand?

If the answer is no, let it go.

Worrying gives you something to do, but it doesn’t get you anywhere. Instead, focus on what’s yours to shape—the actions you can take to address prevailing problems—and ignore the rest.

In the end, you can’t control the hand the universe deals you.

But you can control how you choose to play it.

In summary, I guess worrying is a waste of time. Try not doing it. Life is going to happen whether you go along with it or not. At least play it to your advantage instead of letting it eat you from the inside.