By overpowering your opponent.
By outmaneuvering your opponent.
By outwitting your opponent.
By retreating and regrouping for a counter-attack.
By expending the last of your strength to try to win.
By weakening your opponent.
Having the strongest units.
Having the best mix of units.
Having the right tools.
Examine what went wrong and what went right.
Consider what to do moving forward.
Regroup and regain your strength.
That you had better things to do.
Apologize and explain why.
Apologize and say you were lured or pressured into doing so.
Prepare in good time.
Study all day the day before.
You don't, but do your best on the test.
You don't show up for the test.
You ask for an extension
Changing eating habits primarily.
Reducing food intake primarily.
By body modification (surgery).
By changing your perception of yourself.
Here's an interesting quiz for you.