I was going to post the below tips... then I did the following calculation:

Your grade is 500ft/0.25mi or 150m/400 m - you sure that's a 37% grade (or more if you say it's less than 025 mi)?
Frankly that would stump me. I've only ever done 20%. TBH I've never even SEEN a 37%. Can Cars still drive that?



Yes, don't stop. If you have clipless pedals, concentrate on pushing and pulling, still trying to use all muscles at your disposal even if you are reeeal slow. I seem to notice it eases a bit on the "help - no oxygen" state I get into.
If you must stop, look out for a turnout where you can clip in in the "flat".
Don't look up. see the bit of road in front of you - just the distance to make you safe if you expect any other traffic.
And another way to make a hill easy (welll, easier) for you - is to try one that is harder. Just once
Standing up - on a road bike - pull on the shifter horns, or whatever they are called.