True though. At the same time, beginners shouldn't lose hope if they incur losses. Losses are a part of each trader's life and the only thing we can do is try to fix the reasons for the losses be it in our strategy or other.If you are an experienced trader that has been in profit and loss situation, you would know which loss to ignore, but if its a beginner under no circumstance you should ignore it.
Find the error and analyze what mistake you caused and try to avoid them in the future.