It is one of the most important thing that you need to remember so that you wouldn't lost contact with your wallet. If you really give great importance to your money, that large amount wouldn't go out of your hand. Let's just hope they can give assistance on how you can recover or change you password cause that's a very huge money. Be mindful also cause maybe you got hacked and troubled with your wallet cause they are dessiminated all over the place these days so try checking it out too.