Dr James Kirby from UQ's School of Psychology spoke to ABC about the benefits of celebrating Christmas early.
He said Christmas cheer is more than just tinsel and baubles; it was good for wellbeing.
"It's just a way of showing that we are part of a community, we have gone through something big; let's celebrate the positive things that are on our horizon," Dr Kirby said.
"It helps us recognise the importance of trying to reach out and connect to each other, and in some ways try to put a little smile on each other's faces as we go through the constant doom and gloom that's hanging over our heads.
"Knowing you're part of a community that is actively doing things that create ritual and a sense of belonging and connectedness is wonderful for our wellbeing.
"There is a sense of 'I have the chance now to take actions that can have a real positive effect by bringing smiles."
For those looking for a little encouragement to put the tree up early, Dr Kirby said to go for it.
"It's really important that we do jump into it and involve ourselves and embrace the joy because if we don't purposely try to do it you're waiting for external events; and when will they come?"
