Today's shiur is sponsored by David and Eve Farber in honor of Olivia and Dov's birthdays. What things should one spent a lot of time on? Why? The gemara proceeds to list all differnt types of things - three things that cut short one's life, three things that require mercy from God, three things that God directly brings. Sicne dreams were mentioned in the context of things that require mercy, the gemara delves into the issue of dreams and brings many differnt statements regarding dreams.