I have the same thought too. I used to jump to different stacks before, but when I started learning web development and learned a lot from my senior, I told myself "This is not enough, I'll try my best to learn deeper!". Since then, I started reading about patterns of development and always ended-up wanting to satisfy myself by applying what I've read and improve my coding style.

Now, I am looking to try something new, something more challenging. I hope I get enough time to focus on it.