This, 100% this. #1 is so easy that it hurts be that this isn't headline news. The CDC fucked up big time telling people masks don't help. Even if you don't have access to a surgical mask there are resources out there for how to make cloth masks or even use a T-shirt as a mask. This should be table stakes. Yes, you are going to get weird looks (I already have) but if it encourages even 1 more person to feel comfortable then it's worth it to me.
#2-4 are largely out of our hands (as individual citizens) but #1 we can all start doing TODAY.
inb4: I'm not interested in arguments about "false senses of security" (we already have people thinking that without masks) or that "they won't fit the mask correctly"/"wear it incorrectly" (you are letting good be the enemy of great and we just don't have time to get to "great").
Please reduce your contacts and if you have to go out wear a mask!