Strengthen the part of yourself you expect success to test.

Success tests specific things: how you handle being told you are right, whether you still listen, whether the rules you applied to yourself still apply. It is worth knowing in advance which of these is your weak point, since success arrives with plenty of encouragement to ignore it.

Name the quality you suspect would go first if things went very well for you. Then strengthen it now, while you can still see it clearly. Nobody sees it clearly afterwards.