She and Hume agreed that the earlier the intervention in a person's life, into childhood, the better the eventual financial outcome.
Also discussed by the panel was the importance of actions by product providers, such as banks nudging people to put some money into different pots.
Levin said: "Most banks now do pretty well. It's that behavioural finance aspect - getting people to take action earlier or help with mental accounting - and it can help get people save more.
"There are clever things that can be done in the proposition and the product or service design. Nudges are incredibly powerful.
"Now, nudges can be used badly, as well. They can be used for evil - there's a dark side and a light side - and we've seen how social media can use behavioural finance in a negative way.
"But there are rules about that, so financial services providers need make sure these are being used in a positive way."
MyBnk
Also on the panel was Steve Korris, programme and delivery director for MyBnk.
Responding to a question from panel host Leon Ward, chief executive of MyBnk, Korris said there was no "one silver bullet", but what their teams have found is that it is important to work hard to find ways to engage with people, younger.
He said: "Whatever you are trying to change has to have the right message and the right incentive, and tapping into what is really going on in their world."
His comments can be heard in the video, above.
