Of course, but it's never truly guaranteed for anyone, is it? I've been in poverty before, starved and homeless. Today I'm a Punk that got lucky, and I recognize I could just as easily lose it all tomorrow. Ultimately, it's not up to me what life throws at me at any given moment. I only have control over my reaction. I can tell you from personal experience that material security is not what primarily builds up stability of the mind.
I'm not some jackass that's going to tell you that basic necessities don't matter at all, rather that you've got to accept that they're never guaranteed. I won't spew some bullshit that evil people doing evil things isn't really all that bad, but rather that you need to accept the reality we all share. Life will throw bullshit after bullshit at you, but it will never dictate how you react to the bullshit. Your material conditions are forever a slave to circumstance, but your mind cannot be conquered by anyone but you.