How do you maintain relationships while working 70+ hour weeks?

prospect here but older friends from uni/college are AN1 and AN2 and they said the following:

• you try to keep up regularly at first, but eventually it becomes a draining effort to have to keep multiple tabs on more than just excel 
• people who work in finance/big law + understand the demands of your job are the most likely to stay friends, the opposante is true on the other side of the spectrum. You can grab a beer or lunch with a friend if they work in your city’s main financial district (wall street for NYC, London’s ‘city’/Canary Wharf) 
• almost all ppl that had a girlfriend going in couldn’t make it work. The ones that did (now VP1/2) are happily married. it’s a good but brutal test of the bond.
• you usually don’t have energy to see people after first year anyway, you end up realising that sleep is like currency and any extra hour you can get is more valuable and beneficial as sleep than socialising.

• it gets easier when you’re ASO and up, as you get more and more control over your time and the ability to push back on work/get some protected time to attend a lunch/dinner etc.

  grim outlook but the job seems require that sacrifice.