In trading it's really important to detach yourself from any emotions than can influence your objectivity. Don't trade with money you need or cannot afford to lose! Be patient, have a systematic approach, don't break your own rules!
And understand that taking losses is okay too, if you are not in-sync with the market it's better to let it rest for a while. Observe, reflect, make a strategy (Plan A and B) and know where to take profit (most importantly)!