Ever heard of anyone saying the first step of Investment is not to lose money? Well, that seems to be very simple, however it's not practical to me. You'll see, many often dreams to earn first, but eventually loss in reality. What I can say that is actually a norm and don't blame yourself as we are human(especially to newbie), we made mistakes and fall. What really matters are, we practice, learn and always find a better strategy. 

I have a friend who recently loss more than 70% of his capital trading stocks in less than a year... hmm, am not sure how he did it but I'm pretty sure he never prepared himself for the drop. The sad thing is, he already quit and stopped trading after losing so many. To some certain extent, he's good in protecting capital balance from losing again but I would say it's not a wise move. For me, I would take a few days/weeks to rest(but still keep myself updated to the market) and reconsider the strategy which is really workout for me. Remember, don't run away from mistakes but equip yourself a better plan or try to learn more from a successful investors(which I assumed you already have a role model). Frankly, I can assure you that no one can guarantee that they can make profit every time even those successful peeps out there were once with head bleeding... So, stay strong, stay positive and of course don't forget to equip yourself the rightful knowledge before reenter the war.