Here you go! :-)

Maintaining existing friendships is more important than making new friends.

I think it is more important to make new friends.

Firstly, it is good for our mental health. Some people don't like to make friends because they are shy or nervous when they meet strangers. This is natural and I also feel like that at first. But one day I realized that making new friends may be a good thing, so I shouldn't avoid opportunities to meet new people. One of my friends, who I wasn't friends with 2 years ago, is very active and gets involved in things that she is interested in as soon as she is able to. I envy her because I worry about lots of things when I start something new. However her attitude spurs me on. I have become a more positive person. Her passion has improved my mindset. I appreciate the day we became friends.

Secondly, it may help you earn more money in the future. For example when you start a new company, you have to introduce yourself in front of people you don't know. At lunchtime you don't have any friends to eat lunch with. But if you try to make new friends and develop good relationships, you will have an opportunity to talk to senior guys.They can **judge your performance and decide how much you earn. If you and your boss are good friends, you may earn more money. That is why making new friends is important.

**Not sure what you mean about having lights to judge your performance?