Think a little bit more about your own personal reasons for doing something. That's where you'll find a good reason to keep going or not.
Self-tracking sounds like a cool idea, but I have used self tracking websites and apps before. In my experience, I just get lazy or forget, so I have never used on more than a month. I think it is just too much hassle and most people don't like the inconvenience of having to enter data about themselves. Do you use your own platforms in your daily life?
I agree with andkon about searching for a purpose that is personal. That, in and of itself, would drive you if it were a worthy cause. I'd say pursue an idea to which you would dedicate your entire life (or at least the next ten years, as Sam Altman has said).