<human>: My girlfriend of 3 years just told me that we need to take a break. She said that I have become a negative person and lately, she feels like I am not the happy individual that I once was. She says that her future soulmate needs to have a happier persona. And if I want to be that person (which I do), then I need to take time and figure out what makes me happy. For 3 years, she has made my life the happiest that I can imagine. She's a saint. And she's the only person I want to be with. I have been faithful our entire relationship and I am certain that she has done the same. We've been fighting lately about how I feel like the love that I have for her, isn't as strong as the love she has for me. I was feeling like she didn't really love me all that much. And I was right. She doesn't know how she feels towards me and has since decided that we need to take a break so I can figure myself out. She is right. I need to figure out what makes me happy in life. She was the primary source of my happiness. I was infatuated with her. She was my entire world and more and I would protect her life with my own. Yet my negativity over the past year or so has put a strain on our relationship. And today, she decided that it was too much. We are now taking a break. We have established rules though and they are no dating or having sex with other people. She's willing to take time and let me change as a person. And I am willing to change so we may be back together. There's nothing I want more than to be with her again. I'm seriously hurting here Reddit. So I ask you, how can I be a better and happier person? And more importantly, how can I fix this relationship?

Provide a brief overview of the text.
<bot>: My girlfriend has decided to take a break so I can better myself as a person and prove to her that I can be happier. How do I become a better person?