Hume "Mind/Body I"

As I was reading through the chapter on "Origin of Ideas" I was very interested to see what Hume's point of view would be. He talks about the differences between thoughts and impressions. Thoughts go in and out of our minds, "What am I going to wear today?", "What is the squareroot of 100?", "What time is it?", "When is dinner?" Our minds are constantly thinking up new ideas and questions, whether we notice that we are involved or not. Impressions stay with us forever. I remember riding my bike down a hill and around a turn with my brother in law, I saw he did it so gracefully, so why couldnt I?. . Well I found out two seconds later that I couldn't, when I took the turn too fast, flipped over my handle bars, and landed on someone lawn, not too far from a huge rock. For the longest time, I would get sick going down the huge hill on Rt 23 that goes over 287. It would actually make me scared and dizzy, because it would bring back (such great) memories of that one time. When I went down rt 23 the scary feeling would arrive from my past experience. The fall would replay over and over in my head as if it was actually happening right then and there. Hume also uses an example of how if someone is angry, you know understand what they are feeling but you cannot physically feel their emotions.