Build up confidence. You don't need muscles or heavy weight to be successful. All you need is to pay attention. Look around you, what do you see? A possible killer device? A bottle? Chair?
Oh, and never crush a bottle before hitting someone, you will end up with nothing. Crush it on your opponents head instead, and after that, push it into his throat or eye, that should leave a mark.

Always keep your hands ready, when in tight situations. You don't need to hit, but just block. And always block sideways, don't take the hit directly, but push the opponents arm away sideways and kick his knee with your leg while on it.

The smartest way to handle these kind of situations, of course, is to avoid getting punched. For that, I suggest a machete, chop his hands off before he can hit you, so you can take the lead. It doesn't have to be a pro weapon, a cheap one will do also.

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Think again!