...would you use that day to relive the most enjoyable day of your life, or to change things you weren't happy with?

Time travel is the theme for this month's 'Would You Rather?' dilemma.
And to clarify, you can't do both.  This month's 'Would You Rather?' dilemma is a straight choice; either relive the best day of your life, or relive a day of mistakes and correct those mistakes.

Both options would be quite appealing, but if it had to be one or the other, which one would you choose?