Risk is about psychology. When you are risking 1% of your capital, you are presumably protecting yourself in such a way that it will take you hundreds of losses in a row (or in aggregate) to lose all your trading capital. When you think about it, this is really about staying in your comfort zone. If you know the next trade will make practicaly no difference to your life or even you trading account, it should help you be detached from the outcome of that trade.
So, when considering how much to risk on a trade, keep in mind that, unless you are risking an unreasonable amount (say 10%) of your account, the difference you will make is going to be on how volaltile your equity curve is going to be rather than how successful you will ultimately be.