There was a thread on this a while ago... but I will re-iterate.
THINK LIKE AN IDIOT. Physics isn't there to make stuff up, it's there to explain what you already know happens. For example, when you throw a ball, it makes a pretty arc in the air. Believe it or not, more than half of physics students will actually say on an exam that the ball takes a straight line to the ground, thus making a triangle. So, let me say it again - physics is there to explain WHY you see what you ALREADY KNOW happens. so - think like an idiot. Draw pretty pictures. you'll do great.