Should I change my new belief sentence or continue?

I’m doing the March homework on Believing New Things. My new belief sentence is: “I am a qualified and awesome Full Stack Developer.” Halfway through the month (day 18 now), I got more clarity about what I wanted to focus on – to be a master in JavaScript (a language which a Full Stack Developer should know, sort of like a prerequisite).

So do I still continue with the current belief sentence (to be Full Stack Dev) or the latter (JavaScript master), then focus on the next step to be a Full Stack Dev?

Thank you so much!