With prices at historic highs, both buyers and sellers are wondering when to make a move. Whenever I talk with someone who’s on the fence like this, I always bring up a point from a mentor of mine: It’s impossible to time the market. I have an exercise that demonstrates this idea, but, in short, you should buy or sell when it makes sense for you. Don’t look at the market to figure out the best time. If you aren’t quite convinced, watch this short video.