Any overwhelmingly large sum can be broken down to digestible bite size numbers. The trick is to break it down into miniscule fragments, and spread these out for a significantly long period of time.
For example, when one spreads out a lottery winning in the millions to several decades, and breaks it down to weekly or monthly fragments, one will create a rather ‘humble’ payout to oneself. The same goes for debts.
If you have time and the capacity of sticking to a plan, there is no need to fear big sums.