Short term I feel like this article is still useful advice as it helps to avoid the trap of working on something for a small amount of time and feeling like it was a waste when it was really stacking bricks to make a larger effort.
Religion aside (don't go against whatever religion you choose says), you need to compromise between short term and long term. You might die tonight, you might live to 120, and odds are you don't have any better idea. You also don't know how you will age. There are people climbing mountains at 90. There are people at 65 who need to help get out of bed. If you are lucky to be healthy enough climb mountains at 90, then it makes sense to save a little now so you have enough money to afford to do what you want. If you lose your health by 65 then there is no point in savings as you can't enjoy life anyway.
It feels like shit vs more shit
It's far from the only path though. There's many possible causes of depression and even more possible solutions. Find one that works for you. You deserve more than shit. As someone who's been deep in that shit more than once, you can claw your way out and once you do, the world is a beautiful place that's worth growing old in. Then you'll end up in the shit again but each time climbing out gets easier.
Personally it took me moving country, changing career more than once until I found one that gave me a sense of purpose, finding a beautiful and totally surprising partner, and lots more to find my present stability.
That's what worked for me. What will work for you? You need to find that out. You only have one life, if it's shitty now them what have you got to lose by making every possible effort to change that? I mean, what could possibly be more important than making that effort? Certainly not a shitty career or a shitty relationship or a shitty family. Leave them if you need to. Nothing controls you except you. And physics, and the law and immigration officers and so on. But there's always room to maneuver.
This is incredibly meaningful and if someone can get their mind working this way, they appreciate every minute of life.