Tip 88: Change into your easiest gear

Putting it in the granny gear on a hill is like visting a dangerous third world city and spending the day in your five-star hotel room.
It's easy! It's pleasant! So stress free! I feel like I'm wasting my life!

BONUS TIP: Many of God's lightning bolts are aimed at lower-end Shimano derailleurs, at the moment the user goes to shift back up. 
The unfortunate mortal is then stuck riding around town with their legs spinning like a Hanna-Barbera cartoon character just before they shoot off in a cloud of dust.