Having lots of interests isn't really so much the problem. When life has obligations for you to complete, sometimes it's really hard to know what to let go. Or sometimes it's much too easy to let get away. How much do we keep in our lives that's actually superfluous? Part of that is the fault of big businesses commercializing everything to death. Kudos to those that can go about their business unfazed by the constant bombardment of advertising we encounter on a daily basis. Too many things try to compete for our attentions, even if we don't realize it. It's so easy to become overloaded by all of the options that modern life presents us with.
You really just have to go with whatever fuels you and stick to it. Some people try to take part in a little bit of everything. I've never been much of a sampler myself, but to each their own. Just always keep in mind to keep those you love and depend on you first and don't let any hobbies or interests take you away from them on a regular basis. That's an area where keeping up is paramount and you really don't want to fall too far behind.