Depends on your age really. Figuring out what you really want to do in life would be the best solution. HOWEVER, that's usually hard for young people, and even people in their 20s to be quite honest. Some people NEVER end up figuring it out.
My advice would be to put effort into school and graduate high school with good grades. This gives you the option to further continue your studies and build a nice career for yourself, or perhaps even a fall-back plan if certain hobbies (as a career) don't end up working out for you.
Once you're on track to ensuring your future, you can start to do things you like, hang out with like-minded people, and just explore overall. Make time for your hobbies, spend time with good groups of friends, and just live life. They say that you're the average of the 5 people you're around most, and I've found that to be rather true when I reflect on life.
Other than that, consistently talk to a reliable, mature, probably older person and just take things one step at a time.
Best of luck!