oxygen masks

I have a fab friend (I have many fab friends, I expect I count you among them) who once very wisely reminded me of the aeroplane safety drill. In the event of an emergency, always put your own oxygen mask on first before then helping others. It makes tons of sense - if we don't, we could then run out of air and so be of no use to anyone else. But if we see to our own air supply we're then good to consistently assist as many others as needed.
As a parent, and as someone who has been brought up with a sacrificial notion of "love others as yourself" as if that were to mean loving others above yourself, I think there's a pull to put others first. If I was in a disaster with my kids I can see I'd be tempted to check they're ok first and then see to my own needs. It's what often happens in daily life. But the reality is - in both daily life as well as a crisis, that if I don't care for myself I won't be in a position to care for others.
So what are your oxygen masks? How do you remember to pull it on when the going is getting tough rather than belatedly remember you had one and forgot to get it out?
Mine include my friends who sing my song back to me when I am forgetting it. Last week I texted a friend I only have intermittent contact with, and simply said I need you to remind me how wonderful I am. She replied saying that was easy. Bless her.
I hope you have a great set of oxygen masks, if you're not sure what they are I urge you to think about it now before you actually need them. I'm always happy to give you one of mine - as long of course as I keep one for myself cos that's the whole point ;)