I am going to do it!

[Melalvai]

I feel weird wondering what motorists think of me when they see me crawling ever so slowly up a hill. What if I have to get off and walk? I would almost die of embarrassment!

I wonder what motorists would think if they knew what I think of them.
To motorists, a bike crawling slowly up the hill is no different than a bike "racing" up that same hill, or down it. All bikes are slower than them and that is all they see.
(Glaring generalities aside.)

I see a lot of people walk their bikes up a hill. It's quite common. If you can make it up the hill without walking it, great. If not, you've got a goal. Either way--you are out on your bike, not in a car or couch.