I reached one of those GTA humps where the missions are too much of a pain in the neck to keep replaying.
There's a mission where I'm supposed to follow some guys on a subway in my car.
There's another where I have to catch some guy who takes off on a bike and he has a major head start before I even get a vehicle.
Then there's another where I have to place first in a race, and the driving controls are so wonky that the race car is constantly going into uncontrollable spins.
In all cases, you're one snag away from failing the mission. My frustration level has to dip a little before I pick it back up again. Wouldn't be so bad if they had a checkpoint to restart from, rather than restarting all the way back at the contact's HQ.