Agree with all the posts, but always important to remember that you have good days and bad days.
This morning I obviously woke up with my climbing legs on, and the steady drags I have on the way in to work seemed a breeze - I even tackled a couple in the big ring. This certainly isn't an everyday occurence though. Obviously riding them every day is the practice required to make them easier to conquer in the long run, and although they never become easy, you will find that over time you get to the top less out of breath, in a harder gear, and in a faster time. Some days however, I know i've not got the energy to force a large mph all the way up and you have to sit and spin them out.
On steep climbs I like to think that I'm attached to a winch and every pedal revolution is pulling me up to the summit. Seems to help sometimes as from a psychological (cycleogical??!) point of view it helps you remember that it's a certainty that in a number of revolutions you'll be at the top and you'll have the instant relief of the flat, or even a descent if you're lucky, rather than just aimlessly climbing, wondering if it will ever end.