You may say with what is going on in your life, that you can't reach it.
However, don't let it stop you from reaching what you really want. Always keep that positive light on that says "I will reach that goal/dream, it'll just take time, but I WILL."
If you just go online, you may read about people who are well known now who achieved their dreams. Funny thing is.... They weren't always well known.
YOU CAN DO IT. Work hard, have FAITH. Always have hope.
If it's really, truly your dream... If it's truly something you are super passionate about --something that you can't see it not in your life; have patience.