A few things. The first thing I would recommend is that, whether or not you pursue post-secondary education, you continue to educate yourself, starting now. The second thing is that you should engage in some serious self-reflection to identify what your real strengths and weaknesses are, what you think you like and dislike and why, and what you want to do (or not do) in life. Self-reflection should be a continuous process, and although your reflections at any particular point are perhaps not particularly useful, any trends in your honest self-reflections are. For example, if you started wanting x out of life, but a year later realised you now want y out of life, what happened? Try to understand yourself. Finally, you'll come to realise that, in life, save for your family, no one really cares about you. Hence, if you want something to happen, you'll have to bring it about with your actions — if you depend on people who probably don't care about you to bring about the things you want, you're just relying on luck.
So, very concisely: read, meditate, be independent and hold yourself to account.