Depends on the type of ride. I would suggest you'd be better at 'spinning' up a climb rather than 'pushing' a big gear. Also depends who your riding with, if people are going stupidly hard up climbs and making people struggle then that isn't fair, and it also makes them look an idiot. Not one likes a winter racer..(unless it's a dedicated training ride..) Don't attack climbs either, as oxygen debt will soon catch you out. Would agree with the above to, regarding not looking far up the road.
Find a local club run to tag along with, usually there will be a faster group, and a slightly more sedate group. The miles rack up easy, and climbs won't be such a chore after a couple of months.