If there's one person who knows how to be okay with being alone, it's Chris Hadfield. The celebrated astronaut, who found fame by posting updates from the International Space Station and in particular with his rendition of David Bowie's Space Oddity, first traveled to space in 1995, and has spent many hours on his own.

With this in mind, he's the perfect person to give advice during these frankly alien times. He spoke to Ray D'Arcy on his radio show recently, sharing his top tips for living in self-isolation. 

Hadfield is familiar with fear, as an astronaut preparing for worst-case scenarios and the unknowns of sending people into space. His book, The Darkest Dark, tackles this, and is a favourite of Ray's seven-year-old son, Tom. 

"I wrote it to show that it's okay to be afraid, no matter what age you are", he said. "The real question is what do you do with it - how do you deal with danger in your life that makes you afraid so even a book that is written for your children. Hopefully, some of the ideas are valid right across the board." 

He said that getting to grips with the fear of the unknown is the first step forward. "The first and most important thing is not to be paralysed by the fear of the unknown". He says that to understand that, you have to "truly dig into what is triggering the fear response - why do I feel uncertain? Why do I feel afraid? 

"There's probably some real actual danger there and rather than just crossing my fingers or rubbing a lucky charm or hoping if I dig into the true thing that is threatening us." 

On a space ship, it's the potential for fire or a meteor hitting the shuttle... There are definable actual risks and then find out the probability of them actually happening and then find out ways to stop them from happening."

While living on a space shuttle feels miles away from what we're living through now, Hadfield says there are clear parallels to them both. "To me, that is for everybody", he says. "Don't just listen to the panic mob, don't just go with what your gut tells you. Dig into the actual threat, the true risk we're all facing right now." 

Central to this is where you get your information, and Hadfield was clear on the importance of finding trusted news sources and monitoring them in ways that is healthy for you. 

"Change is hard for everybody and accepting that new environment - I'm on a spaceship - I'm on my own little voyage with my own little crew so life is different. You'll get over that part, and now try to redefine life where you are." 

Change might be one thing, but trying to anticipate and prepare for the new reality that will come is quite another challenge. Hadfield says that "once you know for sure the risks" you can focus on giving yourself a "new set of objectives".

"Give yourself a new definition of success. Everybody knows three months ago what a good day was or a good day at work or whatever. But the conditions are different now so what is your new set of objectives?" 

He says that redefining what your day looks like will help you understand what you want from it now. "If the day goes perfectly what will I have accomplished by dinnertime? And it might be something as simple as I made everyone in my household laugh twice or I prepared a meal that we'd never had before and it turned out well or we all learned a new song... Redefine it for yourself and don't use your old measure of success." 

With families and households spending more time together than they have in ages, possibly ever, there is the risk of tensions running high. How can we keep spirits high?

"One thing I instituted with my crew members was to try and do one nice thing for each other person onboard your spaceship without being asked every day so if you're a crew of six people just go out of your way to do an unasked nice thing for every other person ... it sort of creates a contagious goodwill environment. 

"Don't be small-minded, take a breath, count to ten and recognise this is tough for everyone - build an agenda for each person. Cut yourself some slack."

For more tips from Chris Hadfield, listen back to his chat with Ray at the link above.