"It's the first time for everyone to be a man, don't be afraid, be a serious car-scrapping person and do high-profile things" means: it's the first time for everyone, be a car-scrapping person and do high-profile things without being too depressed.

This passage reminds me of my cousin:

My cousin has a straightforward personality and is very kind to people at ordinary times. Now he has many friends around him. But the only bad thing is that they talk too little, don't like to communicate with others, are not decisive enough, and some are too low-key.

Later, my cousin found a girlfriend and got along well at first, but with the passage of time, her shortcomings also emerged. For example, my cousin is timid, has no confidence in anything, is too honest and kind, keeps a low profile and so on. Then, my girlfriend said something like this: "Honey, don't be afraid. It's our first time and we are all equal. We should be a little harder and do things with a high profile, so that our work results will be seen by the leaders and we will become more backbone. "

Yes, everyone has their own way of life, but in fact, they don't just say what they do. Because it is more because it has been formed in the bones.

For example, this person is a low-key person and doesn't like publicity. You let him publicize, he doesn't know what to do. Therefore, the best way is to be yourself.