I am starting trading some month ago.Bought some alta coin but now all alta coin are down and i donot understad what can i do?I get a big lose if i sell this.So how control my mind ?

News, team projects and systems are things you have to research about your altcoin if you're trying to do the real business here.
well i think we dont have to ask anybodyon how to control our emotion because it really depends on us on how we use to make limit in our self emotion.i think we have a different kinds of experince to be use on refference on making a dicision.because i believe that some people who get success is the person who hadca lot of experience.
if we have many experience especially in trading then I think we can trying to learn to be patience so we can control our emotion. I see that if we spend more than 7 hours in front of our computer can give a bad effect to us which is our emotion can be effect and we can not clearly thinking when we see something is happen. so I think you need to take a rest for a while after you watching the market in a hour and you can come back again in 15 minutes or 30 minutes to continue trading. before you make decision, make sure you take a deep breath and think twice about your decision so you won't regret after you made decision.