How to change your mindset?

so apparently I have this mindset of "not looking" for a girlfriend and for about 7 years now I kind of focused on myself with hobbies and work. And every time I see a girl, I wish I could talk or say something and then I tend to overthink and tell myself "ignore it, focus on other things" because you'll meet a girl when you stop looking right? (I've never asked a girl out or anything). Will a girl appear out the blue when im not looking? im anxious to even approach a girl who looks at me and smiles and I immediatly think going up to a girl considered "chasing" or being needy or hell, even just talking to a girl that you like sounds the same thing as "looking". How do i change this mindset and stop thinking like that?
How to change your mindset?
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