Not very good. I tend to bite my knuckles and chew alot of gum.
I'm alot of help.
Traffic is probably the worst for me, I "can" do it, but avoid it as much as possible.
I stick to early morning hours and the less traveled routes if I need to make a trip into the more congested areas (home before noon usually here). We have a toll road that no one uses around here because of the price of the toll ($1.25), you're lucky if you pass 4 cars on it in the morning. To me it's well worth paying the toll to avoid the 2 lane traffic of the other route.
I focus only on the immediate area, and what just lays ahead in heavy traffic. Distractions can be an issue (for me). Another thing is I always know my route, if I have to drive somewhere new I map it out on the internet the night before, or take a ride there in the very early morning hours... days beforehand if I can so I can scope out the area, where to turn, where to park, etc.
Learning is the hardest part, you will get disgusted, you will want to give up. Don't. Find someone you are comfortable with that can teach you, and take it one step at a time, you can do it CBC! My accident prone grandmother who I wouldn't have trusted to wheel a cart in Wal-Mart (even when she was young), taught herself to drive a full-size stick shift truck that she was left with when her husband died, she drove for over 15 years to all the local stores without a license, until someone hit her in a parking lot. Then she finally went for her test at the cop's recommendation.