So when the party they don't support comes to power, they can think their lives will be ruined.
That wasn't true, Bruins said.
"You still have your life and you can influence people in your world; your friends, your children. Whatever the outcome you can still influence your own circle.
"You're allowed to be frustrated, but don't make it influence your whole life. It's not like the Government controls everything in our lives. You're still in control of your life, so believe it."
Voting is an important task and the avalanche of information to help voters make their decision can be overwhelming.
But it was okay to focus only on the issues that were important to you, Bruins said.
As for those on the hustings, likely surviving on little rest and lots of adrenaline, healthy eating and sleeping, and getting some exercise, would ease the impact.
Finding time for all three wasn't always possible, but those seeking to run the country would benefit from simply focusing their minds on both the positive and the now.
"Try to block those unhelpful thoughts ... 90 per cent of our worries never come true."
Meditation and mindfulness was a tool that was available anytime.
"You can do it in a car, in a meeting. Just put your hands on your tummy and breathe."
And remaining true to yourself was far less exhausting than trying to pretend to be something you're not, she said.
Former Prime Minister Jim Bolger, a four-time candidate for the top job, said once the campaign was underway candidates "don't have a life outside it".
Energy came from the conviction you held about what you stood for and what you could achieve.
"The only way you survive with your body and mind intact is being open with the electorate. The most important thing is you've got to have a clear view of what you hope to achieve and be realistic about that.
"Focus on what's real. Don't get distracted into absurdities and don't believe you are going to save the world on your own."