grammar - How to parse this sentence (...because ...)

I have confusion on parsing of following sentence...

"There is no reason to be depressed or give up simply because you will make a few wrong choices."

The sentence was captured from an article and the context are as below.

5. The fact that failure will happen is not an excuse for expecting to fail

There is no reason to be depressed or give up simply because you will make a few wrong choices. Even more crucial, you must try your best every time because it is the effort and the practice that drives the learning process. They are essential, even if you fail.

Should I parse this sentence as "[There is no reason] [to be depressed or give up simply because you will make a few wrong choices]." or as "[There is no reason to be depressed or give up simply] [because you will make a few wrong choices]."

Thanks for your help ...