How do I tell a girl that I don't want to be in a relationship because I realized that that's not what I want or need right now without hurting her?

We been texting for 3 months and went on our first date. It was alright considering it was my first and she opened up a lot to me about things that she went through and basically its the type of things that would make another guy flee but it didn't bother me i listened and understood where she was coming from. I thought i wanted to have a girlfriend and be in a relationship. But then i realized that i don't i just wanted what others were showing off but i don't need it. She great don't get me wrong i just don't want that for me right now with her or any other girl. i want to focus on myself first and learn to love myself before trying to love others. I am a big overthinker and i have been trying to figure out how to tell her for a whole month now. Just in a kind, honest and respectful way without her thinking that i want to stop because of what the said when she opened up with me.

How do I tell a girl that I don't want to be in a relationship because I realized that that's not what I want or need right now without hurting her?
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