As a 200+ pound rider, I realized years ago that I will never be a fast climber. Lots of hills around here and all the rides seem to go up them, so I kept at it until I started to love the climbing.
I'm more of a spinner than a masher so I use low gears and don't try to grind it out if there is another gear left back there. If I lost some weight I could go up a little faster but I haven't figured out how to do that, apparently.