Setting goals is a great way to challenge yourself and motivate you to achieve wonderful things. Success isn't something you stumble upon, you have to work for it, and setting a goal is the first step on the road to success.
When planning out your goals, the first thing to do is think about what you really want to do. What do you enjoy? Where do you want to go? Be honest with yourself, REALLY consider your own interests. Remember, your personal goals are all about YOU. Once you have an idea of what you want to achieve, it's time to write out some S.M.A.R.T. goals for yourself.
Specific - Try to address "Who", "what", "When", "Where, and "Why" in your goal. Measurable - How will you measure your success/How will you decide when you have reached your goal? Attainable - How are you going to reach your goal? What do you need in order to be successful? Do you have access to everything you need? Realistic - Are you realistically willing and able to do the work needed to reach this goal? Timely - When do you plan on reaching your goal?
I hope this helps. Good luck!