What is better? Being good at a lot of things or Being a master at one thing?
Even if you chose to master one thing it leads you to having to master one thing. For instance if you want to master music production. This may seem like one thing but there are many things in this one thing. It has layers like an onion or a cake!
You could have a never ending journey mastering production but no one will hear your music unless you master marketing. Of course you can hire a master of marketing. Just know that whatever you want to do it leads to something else. Find out what you are passionate about and go all in on that and surround yourself with the right people.