What strategy to exit or make sustainable the environment of below-growth interest rates?

A long - term situation in OECD countries where interest rates are permanently lower than growth rates can be expected to inevitably lead to overindebtedness and to asset price bubbles, and therefore ultimately to a financial crisis even without any rise in interest rates. How can this be avoided? Either by rapidly exiting the situation of below-growth interest rates. But this would be incompatible with the desire to return to full employment; Or by keeping interest rates permanently lower than growth rates but trying to avoid the resulting financial instability with: Fiscal rules that limit public debt where it does not finance efficient investments; Macroprudential policies to limit private sector debt and prevent bubbles.