Every minute hours of video gets posted to YouTube. What does it take? short answer, Passion ..
The reality is for a channel to be popular, it needs a constant supply of quality video. and making quality video takes time. So you say to yourself, I have plenty of time to make videos and I am going to devote my life to this pursuit.
Now, what is that passion you have? Is it cooking, writing, collecting? Whatever story you have, write it down then put it aside.